1. Home
  2. Chevrolet
  3. 1998
  4. Corvette
  5. Transmission Automatic A/T

1998 Chevrolet Corvette transmission automatic a/t parts catalog

Add this car in your garage and make future searches easy.

Seal, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24228816
  • Quantity in car: 1
  • Output shaft (steel/rubber), kit3)
  • Usage: Y (M30)

$33.8579.28

Available in 38 shops

Add to cart


Band, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24232236
  • Quantity in car: 1
  • 2-4
  • Usage: Y (M30)

$19.4823.99

Available in 38 shops

Add to cart


Plate, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24232517
  • Quantity in car: 5
  • Fwd clutch (double parallel grooves)
  • Usage: Y (M30)

$5.285.92

Available in 2 shops

Add to cart


Plate kit, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24232835
  • Quantity in car: 1
  • Usage: Y (M30)

$29.7633.47

Available in 2 shops

Add to cart


Gasket kit, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24236378
  • Quantity in car: 1
  • Usage: Y (M30)

$102.50115.34

Available in 2 shops

Add to cart


Support, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24238102
  • Quantity in car: 1
  • Usage: Y (M30)

$140.57

Available in 1 shop

Add to cart


Plate kit, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24238600
  • Quantity in car: 1
  • Clutch (includes steel & fiber plates)
  • Usage: Y (M30)

$95.11163.30

Available in 38 shops

Add to cart


Plate kit, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24238601
  • Quantity in car: 1
  • 3-4 clutch (includes steel & fiber plates)
  • Usage: Y (M30)

$136.04216.96

Available in 38 shops

Add to cart


Clutch, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24240575
  • Quantity in car: 1
  • Fwd roller (service bulletin#08-07-30-017 applies to this part) (heavy duty)
  • Usage: Y (M30), Y (M30)

$207.08

Available in 1 shop

Add to cart


Bushing, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24241233
  • Quantity in car: 1
  • Propeller shaft front slip yoke
  • Usage: Y (M30)

$5.319.52

Available in 38 shops

Add to cart


Carrier, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24241240
  • Quantity in car: 1
  • Reaction (with deflector) (high-speed) (high speed)
  • Usage: Y (M30)

$70.97222.88

Available in 38 shops

Add to cart


Gear, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24241250
  • Quantity in car: 1
  • Reaction sun
  • Usage: Y (M30)

$82.0991.92

Available in 38 shops

Add to cart


Gear, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24243410
  • Quantity in car: 1
  • Reaction internal
  • Usage: Y (M30)

$34.04

Available in 1 shop

Add to cart


Shell kit, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24243878
  • Quantity in car: 1
  • Reaction sun gear
  • Usage: Y (M30)

$171.86184.00

Available in 2 shops

Add to cart


Spring, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24245066
  • Quantity in car: 1
  • Reverse reversible revision revised revolution(s) input clutch
  • Usage: Y (M30)

$9.7616.92

Available in 38 shops

Add to cart


Ring kit, automatic transmission (m30, 4l60e) clutch gears

  • OEM part number: 24248064
  • Quantity in car: 1
  • Usage: Y (M30)

$9.8517.65

Available in 38 shops

Add to cart


Ball, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 00104918
  • 1/4" diameter, chrome steel

$?

Add to cart


Ball, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 00104918
  • Quantity in car: 1
  • 1/4" diameter, chrome steel (# 10 check ball)

$?

Add to cart


Plug, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 00444613
  • Quantity in car: 1

$?

Add to cart


Seal, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 01358899
  • Quantity in car: 1
  • Automatic transmission case extension
  • Usage: Y (M30)

$?

Add to cart


Washer, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 02436162
  • Flat, 5/16 inside diameter, 5/8 outside diameter, 1/16thk, zp hard

$?

Add to cart


Plug, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08620318
  • Quantity in car: 1
  • Parking pawl shaft hole (.38 diameter)
  • Usage: Y (M30)

$?

Add to cart


Pinion, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08628273
  • Quantity in car: 1
  • 3-4 accumulator piston
  • Usage: Y (M30)

$?

Add to cart


Orifice, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08628864
  • Quantity in car: 1
  • Fwd clutch feed (6.4mm diameter) (no dimple)
  • Usage: Y (M30)

$?

Add to cart


Orifice, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08628864
  • Quantity in car: 2
  • Third accumulator bleed (6.4mm diameter) (no dimple)
  • Usage: Y (M30)

$?

Add to cart


Valve, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08634400
  • Quantity in car: 1
  • Third accumulator ball check
  • Usage: Y (M30)

$?

Add to cart


Spring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08639074
  • Quantity in car: 1
  • 3-4 accumulator piston (blue)
  • Usage: Y (M30)

$?

Add to cart


Piston kit, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642079
  • Quantity in car: 1
  • Usage: Y (M30)

$?

Add to cart


Ring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642105
  • Quantity in car: 1
  • 2-4 band servo second application piston retain
  • Usage: Y (M30)

$?

Add to cart


Washer, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642107
  • Quantity in car: 1
  • 2-4 band servo pinion (11.17 inside diameter x 22.0 outside diameter x 2.30 thick)
  • Usage: Y (M30)

$?

Add to cart


Seal, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642112
  • Quantity in car: 1
  • 2-4 band servo second application piston housing (O-ring)
  • Usage: Y (M30)

$?

Add to cart


Spring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642193
  • Quantity in car: 1
  • Parking pawl
  • Usage: Y (M30)

$?

Add to cart


Retainer, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642246
  • Quantity in car: 1
  • Manual shift shaft
  • Usage: Y (M30)

$?

Add to cart


Detent, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642247
  • Quantity in car: 1
  • Manual shift (includes pinion)
  • Usage: Y (M30)

$?

Add to cart


Spring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642273
  • Quantity in car: 1
  • 2-4 band servo return (orange)
  • Usage: Y (M30)

$?

Add to cart


Retainer, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642416
  • Quantity in car: 1
  • 2-4 band servo cushion spring
  • Usage: Y (M30)

$?

Add to cart


Piston, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642478
  • Quantity in car: 1
  • 2-4 band servo fourth apply (with ring)
  • Usage: Y (M30)

$?

Add to cart


Ring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642480
  • Quantity in car: 1
  • 2-4 band servo piston fluid seal
  • Usage: Y (M30)

$?

Add to cart


Spring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642539
  • Quantity in car: 1
  • 2-4 band servo piston cushion (pink)
  • Usage: Y (M30)

$?

Add to cart


Cover, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08642979
  • Quantity in car: 1
  • 2-4 servo (with seal) (includes ring)
  • Usage: Y (M30)

$?

Add to cart


Seal, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08647351
  • Quantity in car: 1
  • 2-4 band servo cover (O-ring)
  • Usage: Y (M30)

$?

Add to cart

08648178 genuine OEM part.

Nut, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08648178
  • Quantity in car: 1
  • Manual shift detent lever (m10x1.5x8.0, 1.2) (slotted)
  • Usage: Y (M30)

$?

Add to cart


Fitting, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08651654
  • Quantity in car: 1
  • Transmission fluid cooler pipe (1/4-18ext, 5/8-18int) (inlet to case)
  • Usage: Y (M30)

$?

Add to cart


Pinion, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08654581
  • Quantity in car: 1
  • 2-4 band anchor
  • Usage: Y (M30)

$?

Add to cart


Gasket, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08654799
  • Quantity in car: 1
  • Automatic transmission fluid pan
  • Usage: Y (M30)

$?

Add to cart


Seal, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08657163
  • Quantity in car: 1
  • Manual shift shaft
  • Usage: Y (M30)

$?

Add to cart


Piston, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08663608
  • Quantity in car: 1
  • 3-4 accumulator
  • Usage: Y (M30)

$?

Add to cart


Valve, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08663890
  • Quantity in car: 3
  • Automatic transmission fluid/pump cover ball check (double orifice) (with ball)
  • Usage: Y (M30)

$?

Add to cart


Bracket, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08667574
  • Quantity in car: 1
  • Parking pawl actuator
  • Usage: Y (M30)

$?

Add to cart


Pawl kit, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08669911
  • Quantity in car: 1
  • Parking (instrument sht, pawl, plug & shaft)
  • Usage: Y (M30)

$?

Add to cart


Housing, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08673039
  • Quantity in car: 1
  • 2-4 band servo second application (servo piston) (inner)
  • Usage: Y (M30)

$?

Add to cart


Pinion, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08680499
  • Quantity in car: 1
  • 2-4 band servo piston (identify by 1 groove in tapered point)
  • Usage: Y (M30)

$?

Add to cart


Pinion, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08680500
  • Quantity in car: 1
  • 2-4 band servo piston (identify by 2 grooves in tapered point)
  • Usage: Y (M30)

$?

Add to cart


Pinion, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08680501
  • Quantity in car: 1
  • 2-4 band servo piston (identify by no grooves in tapered point)
  • Usage: Y (M30)

$?

Add to cart


Link, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08680731
  • Quantity in car: 1
  • Manual valve
  • Usage: Y (M30)

$?

Add to cart


Bolt, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08680741
  • Quantity in car: 3
  • Valve body (m6x1x54.4)
  • Usage: Y (M30)

$?

Add to cart


Bolt, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08680764
  • Quantity in car: 1
  • Automatic transmission fluid pressure manual valve position switch (m6x1x17.7)
  • Usage: Y (M30)

$?

Add to cart


Bolt, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08680764
  • Quantity in car: 3
  • Fluid passage cover (m6x1x17.7)
  • Usage: Y (M30)

$?

Add to cart


Spring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08681195
  • Quantity in car: 1
  • 2-4 band servo piston cushion inner
  • Usage: Y (M30)

$?

Add to cart


Cover, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08682792
  • Quantity in car: 1
  • Automatic transmission case fluid passage
  • Usage: Y (M30)

$?

Add to cart


Pinion, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08684426
  • Quantity in car: 1
  • Usage: Y (M30)

$?

Add to cart


Spring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08685655
  • Quantity in car: 1
  • 1-2 accumulator piston (orange) (inner)
  • Usage: Y (M30)

$?

Add to cart


Spring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08685656
  • Quantity in car: 1
  • 1-2 accumulator piston outer (pink) (inner)
  • Usage: Y (M30)

$?

Add to cart


Cover, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 08686084
  • Quantity in car: 1
  • 1-2 accumulator (includes pinion)
  • Usage: Y (M30)

$?

Add to cart


Retainer, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 09415640
  • Quantity in car: 1
  • Snap ring bowed ext.fits shift 7/16 plain (output shaft)

$?

Add to cart


Bolt, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 11503870
  • Quantity in car: 2
  • Hexagon m6x1x35 10.9 piece (accumulator cover to case)

$1.913.32

Available in 38 shops

Add to cart


Bolt, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 11503870
  • Hexagon m6x1x35 10.9 piece (torque converter clutch solenoid valve)

$1.913.32

Available in 38 shops

Add to cart


Bolt, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 11506078
  • Quantity in car: 1
  • Hex flanged head m6x1x65 9.8 plain (1-2 accumulator cover)

$3.706.46

Available in 38 shops

Add to cart


Bolt, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 11508687
  • Hexagon, m8x1.25x20, 16.88thd, 10.9, pzor (detent spring to vb)

$4.698.45

Available in 38 shops

Add to cart


Bolt, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 11508687
  • Hexagon, m8x1.25x20, 16.88thd, 10.9, pzor (parking lock bracket to case)

$4.698.45

Available in 38 shops

Add to cart


Gasket, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 12337931
  • Quantity in car: 1
  • Automatic transmission fluid pump
  • Usage: Y (M30)
  • A Service Bulletin Applies To This Part Number. Per Gm Service Policies And Procedures, Failure To Follow Bulletin Information May Result In The Rejection Of A Warranty Claim.

$5.9610.65

Available in 38 shops

Add to cart


Sensor, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 12369458
  • Quantity in car: 1
  • Vehicle speed
  • Usage: Y, Y, Y

$32.8166.50

Available in 38 shops

Add to cart


Bolt, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 12369459
  • Quantity in car: 1
  • Vehicle speed sensor
  • Usage: Y

$5.145.50

Available in 2 shops

Add to cart


Transmission, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 12491899
  • Quantity in car: 1
  • Automatic (service remanufactured)
  • Usage: Y (LS1, M30, G90, GU2)

$1.002487.98

Available in 37 shops

Add to cart


Lever, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24200486
  • Quantity in car: 1
  • Manual shift detent
  • Usage: Y (M30)

$5.315.95

Available in 2 shops

Add to cart


Accumulator, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24201956
  • Quantity in car: 1
  • 1-2
  • Usage: Y (M30)

$42.86

Available in 1 shop

Add to cart


Pipe, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24202440
  • Quantity in car: 1
  • Automatic transmission ventilation
  • Usage: Y (M30)

$5.569.94

Available in 38 shops

Add to cart


Accumulator, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24203239
  • Quantity in car: 1
  • 1-2
  • Usage: Y (M30)

$39.22

Available in 1 shop

Add to cart


Plate, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24203953
  • Quantity in car: 1
  • Control valve body spacer
  • Usage: Y (M30)

$9.52

Available in 1 shop

Add to cart


Piston kit, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24204496
  • Quantity in car: 1
  • 1-2 & 3-4 accumulator (with rings & aluminum pistons)
  • Usage: Y (M30)

$18.4420.65

Available in 2 shops

Add to cart


Plug, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24205899
  • Quantity in car: 1
  • Torque converter housing access hole (28mm with 3 tangs) (small cover)
  • Usage: Y (M30)

$5.058.95

Available in 38 shops

Add to cart


Housing, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24206286
  • Quantity in car: 1
  • Torque converter
  • Usage: Y (M30)

$132.63

Available in 1 shop

Add to cart


Ring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24206509
  • Quantity in car: 1
  • 3-4 accumulator piston fluid seal
  • Usage: Y (M30)

$5.199.12

Available in 38 shops

Add to cart


Ring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24206509
  • Quantity in car: 1
  • 1-2 accumulator piston fluid seal
  • Usage: Y (M30)

$5.199.12

Available in 38 shops

Add to cart


Stud, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24207599
  • Quantity in car: 1
  • Usage: Y

$4.995.59

Available in 38 shops

Add to cart


Spring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24207758
  • Quantity in car: 1
  • 2-4 band servo piston
  • Usage: Y (M30)

$4.595.70

Available in 38 shops

Add to cart


Transmission, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24208554
  • Quantity in car: 1
  • Automatic (service remanufactured)
  • Usage: Y (M30)

$1.002202.38

Available in 37 shops

Add to cart


Filter kit, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24208574
  • Quantity in car: 1
  • Usage: Y (M30)

$29.7045.48

Available in 37 shops

Add to cart


Pan kit, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24208593
  • Quantity in car: 1
  • Usage: Y (M30)

$103.37

Available in 1 shop

Add to cart


Converter, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24208649
  • Quantity in car: 1
  • Torq (remanufactured)
  • Usage: Y (M30)

$224.40270.32

Available in 37 shops

Add to cart


Seal, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24208660
  • Quantity in car: 1
  • Automatic transmission case extension
  • Usage: Y (M30)

$5.175.92

Available in 38 shops

Add to cart


Seal, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24208661
  • Quantity in car: 1
  • 2-4 band servo second application piston housing (O-ring)
  • Usage: Y (M30)

$5.295.95

Available in 38 shops

Add to cart


Seal, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24208664
  • Quantity in car: 1
  • Automatic transmission fluid pump bolt (pump to case) (contains 10 seals)
  • Usage: Y (M30)

$1.723.24

Available in 38 shops

Add to cart


Filter, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24209144
  • Quantity in car: 1
  • Usage: Y (M30)

$4.886.17

Available in 38 shops

Add to cart


Filter, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24209145
  • Quantity in car: 1
  • Usage: Y (M30)

$5.195.84

Available in 2 shops

Add to cart


Spring, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24209794
  • Quantity in car: 1
  • 1-2 accumulator piston
  • Usage: Y (M30)

$4.485.01

Available in 2 shops

Add to cart


Seal, automatic transmission (m30, 4l60e) case and related parts park lock linkage

  • OEM part number: 24210605
  • Quantity in car: 1
  • Automatic transmission fluid pump
  • Usage: Y (M30)

$4.975.70

Available in 38 shops

Add to cart

Go to top ↑.

← Prev. 1  2  3  4  5  Next →
Page 2 of 5

Copyright © 2012-2024, http://oemcats.com.
Feel free to contact us if you have any questions: info@oemcats.com.

Follow us on Facebook - Submit a new shop - Terms and conditions

This site is not owned or operated by General Motors Company.
The trade marks appearing on this website including, but not limited to: GM, Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Opel, Pontiac, Saturn, Vauxhall and their respective logos, emblems, slogans and vehicle model names and body designs are trademarks and/or service marks of General Motors Company, its subsidiaries, affiliates or licensors.
This site is intended for reference only.