Home> Jeep Engine Parts> 4.2 liter (258) AMC Engine Parts

Jeep AMC 6-Cylinder 4.2L (258ci) Engine Parts

Years: 1972-1990

The 258 cubic inch (4.2 L) "258" in-line six was manufactured from 1971 until 1990. It emphasized an 3.895 inch (98.93 mm) stroke and undersquare 3.75 inch (95.25 mm) bore. It was like the 199 and 232. Subsequent 258 models (starting with the 1980 model year for California AMCs, 1981 for California Jeeps and 1982 for all other applications) are furnished with AMC's CEC system.

Click on image numbers to find parts in table below

4.2 Liter (258) AMC Engine. Valve cover Gasket, Valve Cover Cylinder Head Gasket, Cylinder Head Gasket Set, Upper Gasket Set, Lower Overhaul Gasket & Seal Kit Pump, Oil Oil Pan Oil Pan Gasket Set Cap, Oil Filler Plug, Oil Pan Grommet PCV Valve Piston & Pin (each) Ring Set Rod, Connecting Bolt, Connecting Rod Main Bearing Set, Crankshaft Thrust Bearing, Crankshaft Bearing, Connecting Rod Plug, Camshaft Plug, Oil Hole Sprocket, Crankshaft Sprocket, Crankshaft Bearing, Crankshaft Pilot Ring Gear, Flywheel Flywheel Assembly Seal, Crankshaft Rear Camshaft Bearing Set, Camshaft Valve, Intake Valve, Exhaust Deflector Lock, Valve Retainer Spring, Valve Rocker Arm Pivot, Rocker Arm Bridge, Rocker Arm Pivot Pivot Kit Rocker Arm Kit Rocker Arm Kit Bolt, Rocker Arm Pivot Tappet (Lifter) Push Rod Timing Cover Timing Cover Gasket & Seal Kit Seal, Crankshaft Front Seal, Crankshaft Front Gasket, Timing Cover Chain, Timing Sprocket, Camshaft Kit, Timing Damper, Vibration Slinger, Oil Manifold, Exhaust Gasket, Exhaust Manifold Engine Mount, Front Engine Mount, Front Poly Red Mount, Rear (transmission) Stud, Insulator Insulator Insulator Poly Red Mount Kit Filter, Engine Oil Valve cover Cylinder Head Oil Pan Camshaft Timing Cover Manifold, Exhaust Plug, Camshaft Engine Mount, Front Engine Mount, Front Engine Mount, Front Poly Red Gasket Set, Upper Cylinder Head Gasket Set, Upper Gasket Set, Upper Kit, Timing Damper, Vibration Filter, Engine Oil Insulator Poly Red Mount, Rear (transmission)
Item Image Name / Sku Year Range Comments Add To Cart
1 Valve Cover, Plastic

83501398

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1981-1986 Cover only

$49.99

Valve Cover, Plastic Kit

83501398K

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1981-1986 includes Neoprene Gasket

$59.99

Valve Cover, Aluminum Plain

83501398-AL

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1981-1986 includes Gasket & Hardware

$109.99

Valve Cover, Aluminum Black

83501398-ALB

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1981-1986 includes Gasket & Hardware

$114.99

Valve Cover, Aluminum Black

4626079AB

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1981-1986 Cover Only

$379.99

Valve Cover, Aluminum Polished

83501398K-AL-S

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1981-1986 w/ "4.2L" Logo w/ Gasket & Hardware

$129.99

2 Gasket, Valve Cover

8053050

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1981-1986 Layered Foam Rubber

$24.99

Gasket, Valve Cover

8053050C-AL

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1981-1986 Gasket for Aluminum Cover Only

$12.99

Gasket Set, Valve Cover

258-HDW

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1981-1986 Gasket Kit w/ Hardware for Aluminum Cover

$22.99

Gasket Set, Valve Cover

3227854

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1972-1980 6 Cyl, 258 or 232

$8.99

3 Cylinder Head

83503322

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1987-1990 Cylinder Head Only - No Valves,Lifters,Springs,etc.

$485.99

3a Gasket, Cylinder Head

3237756

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1968-1990

$16.99

4 Gasket Set, Upper

83502384

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1972-1990 Includes Both Styles of Valve Cover Gasket

$39.99

5 Gasket Set, Lower

8125722

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1975-1990

$24.99

6 Overhaul Gasket & Seal Kit

FS31151

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1981-1990 Includes 4 and 5

$53.99

Overhaul Gasket Set

8124691

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1968-1980

$49.99

7 Pump, Oil

3181340

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1972-1980 Includes Inlet Tube

$124.99

Pump, Oil

3242141

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1981-1990 Includes Inlet Tube

$137.99

Pump, Oil

3242141WO

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1981-1990 Without Screen

$134.99

8 Oil Pan

3243152

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1972-1989

$148.99

8a Oil Pan Gasket Set

83504662

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1972-1990 Cork and Rubber set (4 pc.)

$9.99

Oil Pan Gasket

53007568AC

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1972-1990 1 Piece - Molded Reinforced Rubber

$29.99

9 Cap, Oil Filler

8132312

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1974-1980

$3.99

Cap, Oil Filler

33001016

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1981-1990

$4.99

10 Plug, Oil Pan

3206696

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1972-1984 1/2" x 20 magnetic

$2.99

Plug, Oil Pan

83501425

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1985-1990 Plug & Gasket, Metric threads

$1.99

11 Grommet

8134400

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1981-1986 0.48" Internal Diameter

$1.49

Grommet

53000957

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1987-1990 0.66" Internal Diameter

$1.99

Grommet

3225627

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1976-1986 0.45" Internal Diameter Export

$0.99

11a PCV Valve

J3211538

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1974-1978

$2.99

PCV Valve

J3236680

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1978-1980 With AMC 232 or 258

$2.99

PCV Valve

J3240359

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1981 AMC 258

$3.99

PCV Valve

J3241629

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1982-1986 AMC 258

$2.99

PCV Valve

33000887

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1983-1986

$2.99

11b CCV Valve Fitting Assembly

53030492

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1991-1993

$9.99

Elbow, Valve Cover Emissions

3236685

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1980-1992

$1.99

12 Piston & Pin (each)

4488672

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1966-1978 Standard

$34.99

Piston & Pin (each)

8134441

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1979-1990 Standard

$52.99

Piston & Pin (each)

8134441.02

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1979-1990 .020" Oversize

$55.99

Piston & Pin (each)

8134441.03

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1979-1990 .030" Oversize

$54.99

.020 Over Piston With Pin

4488672.02

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1966-1978 .020" Oversize

$34.99

.030 Over Piston Ring Set

4488672.03

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1968-1990 .030" Oversize

$34.99

13 Ring Set For 6 Pistons Standard

83506383

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1972-1990 Standard

$79.99

Ring Set For 6 Pistons .010 Over

83506384

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1968-1990 .010" Oversize

$85.99

Ring Set For 6 Pistons .020 Over

4485572.02

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1968-1990 .020" Oversize

$49.99

.030 Over Piston With Pin

4485572.03

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1966-1978 .030" Oversize

$49.99

14 Rod, Connecting

3237812

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1972-1990 Includes Nut

$29.99

15 Bolt, Connecting Rod

53020123

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1972-1990

$3.99

16 Main Bearing Set, Crankshaft

83507079K

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1972-1990 Includes 6

$96.99

Main Bearing Set, Crankshaft

4289M.010

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1972-1990 .010" Oversize Includes 6

$113.99

Main Bearing Set, Crankshaft

4289M.020

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1972-1990 .020" Oversize Includes 6

$107.99

Main Bearing Set, Crankshaft

4289M.030

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1972-1990 .030" Oversize Includes 6

$113.99

17 Thrust Bearing, Crankshaft

83507084

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1972-1990 Standard (1 needed)

$14.99

18 Bearing, Connecting Rod

83500300AB

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1972-1990 Standard (6 needed)

$9.99

Bearing, Connecting Rod

8126205

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1972-1990 .001" Oversize (6 Needed)

$9.99

Bearing, Connecting Rod

83500301AB

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1972-1990 .010" Oversize (6 needed)

$9.99

Bearing, Connecting Rod

8126204.020

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1972-1990 .020" Oversize (6 Needed)

$9.99

Bearing, Connecting Rod

8126204.030

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1972-1990 .030" Oversize (6 Needed)

$9.99

19 Plug, Camshaft

3172313

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1972-1990 2-9/64" Diameter

$1.99

20 Plug, Oil Hole

3105394

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1972-1990 2" Diameter

$1.97

21 Sprocket, Crankshaft

33004107

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1972-1990

$13.99

22 Bearing, Crankshaft Pilot

3213751

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1972-1976

$2.99

Bearing, Crankshaft Pilot

3222723

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1976-1979

$2.99

Bearing, Crankshaft Pilot

3236726

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1980-1986 Bushing type

$4.99

Bearing, Crankshaft Pilot

33004041

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1987-1990 Bearing type

$7.99

23 Ring Gear, Flywheel

3179741

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1972-1990 w/ Manual Transmission

$21.99

24 Flywheel Assembly

3240094

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1982-1987 1982-1986 CJ, 1987 YJ, 1982-1987 SJ

$118.99

Flywheel Assembly

33002672

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1988-1990 Wrangler YJ

$129.99

25 Seal, Crankshaft Rear

4778126

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1972-1990 Rear Main Seal

$9.99

26 Camshaft

8132907

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1968-1978

$99.99

Camshaft

8133009

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1979-1990

$110.99

Camshaft Kit

CLSRC8

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1981-1990 Includes camshaft, lifters & assembly lube

$146.99

27 Bearing Set, Camshaft

3205711

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1972-1990 Set of 5

$32.99

Bearing Set, Camshaft

3208985

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1972-1990 Set of 5 - .010" Oversize

$29.99

28 Valve, Intake

3218732

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1973-1980 Standard

$12.99

Valve, Intake

3218809

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1973-1980 .003" Oversize

$13.99

Valve, Intake

3218810

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1973-1980 .015" Oversize

$13.99

Valve, Intake

3240768

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1981-1990 Standard

$15.99

Valve, Intake

3240166

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1981-1990 .003" Oversize

$12.99

Valve, Intake

3240167

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1981-1990 .015" Oversize

$15.99

29 Valve, Exhaust

3224597

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1973-1980 Standard

$11.99

Valve, Exhaust

3224602

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1973-1980 .003" Oversize

$12.99

Valve, Exhaust

3224603

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1973-1980 .015" Oversize

$12.99

Valve, Exhaust

3240767

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1981-1990 Standard

$18.99

Valve, Exhaust

3240163

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1981-1990 .003" Oversize

$18.99

Valve, Exhaust

3240164

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1981-1990 .015" Oversize

$20.99

30 Deflector

3218976

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1972-1990 Standard

$0.99

Deflector

3218977

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1972-1990 .015" Oversize

$0.99

31 Lock, Valve Retainer

3180458

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1981-1990

$0.99

32 Spring, Valve

3228192

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1977-1990

$9.99

33 Rocker Arm

3223888

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1975-1982

$4.99

Rocker Arm

3242393

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1983-1990

$4.99

34 Pivot, Rocker Arm

3210178

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1972-1979 CJ5, CJ6 and CJ7

$6.99

Pivot, Rocker Arm

3235090

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1980-1990

$1.99

35 Bridge, Rocker Arm Pivot

MRM1718

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1980-1990 Without Stud

$3.99

Bridge, Rocker Arm Pivot

3237851

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1981-1986 With Stud (2 Required for Plastic Valve Covers)

$4.99

36 Pivot Kit

3236513K

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1980-1990 Contains 2 Pivots & 1 Bridge

$3.99

36a Rocker Arm Kit

3223888K

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1974-1982 12 rocker arms and 6 aluminum pivots

$59.99

Rocker Arm Kit

3223888KL

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1974-1982 12 rocker arms and 6 steel pivots

$64.99

36b Rocker Arm Kit

MRK5412

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1974-1982 2 rocker arms, 2 pivots and 1 bridge

$26.99

Rocker Arm Kit

MRK5512

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1983-1990 2 rocker arms, 2 pivots and 1 bridge w/o Stud

$22.99

Rocker Arm Kit

MRK5522

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1983-1990 2 rocker arms, 2 pivots and 1 bridge with Stud

$23.99

37 Bolt, Rocker Arm Pivot

9425708

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1972-1990

$1.99

38 Tappet (Lifter)

4740269

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1972-1990

$6.99

MOPAR Lifter

53010574AB-M

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1981-2006 4.0L

$25.99

39 Push Rod

3214013

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1972-1977 1977 Models w/ Temp Sender in Front of Head

$1.99

Push Rod

3227329

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1977-1980 1977 Models w/ Temp Sender in Rear of Head

$1.99

Push Rod

3242395

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1981-1990

$2.99

40 Timing Cover

53005769

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1965-1990

$48.99

Timing Cover

4720223

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1975-1990 With Molded Oil Pan Gasket

$59.99

41 Timing Cover Gasket & Seal Kit

8129097

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1965-1990

$6.99

43 Gasket, Timing Cover

53020487

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1972-1990

$2.99

44 Chain, Timing

3240781

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1972-1990

$17.99

45 Sprocket, Camshaft

3172306

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1972-1990

$16.99

46 Kit, Timing

8126681K

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1972-1990

$69.99

47 Vibration Damper - Harmonic Balancer

3225201

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1972-1990 with V-belts

$65.99

Vibration Damper - Harmonic Balancer

3242886

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1981-1993

$68.97

MOPAR Vibration Damper, Harmonic Balancer

33002879AB

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1991-2002

$79.99

MOPAR Performance Serpentine Belt Vibration Damper 4.2L

P5249688

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1981-1990

$259.99

48 Slinger, Oil

3173076

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1972-1990

$1.99

49 Manifold, Exhaust

8124999

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1972-1979

$172.99

47 Manifold, Exhaust

3237427

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1980-1990 add 6-G444618 w/ no emissions pump

$184.99

49a Plugs for Manifold

444618

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1980-1990 For 3237427 Manifold w/o Emissions pump

$0.99

50 Gasket, Exhaust Manifold

3184277

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1972-1979 Intake to Exhaust Manifold

$1.99

52 Engine Mount, Front

8128488

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1977-1990 CJ5, CJ7, CJ8 & Cherokee SJ

$13.99

Engine Mount, Front

52019201

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1987-1990 Wrangler YJ

$15.99

52a Engine Mount, Front?Poly Red

21102R

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1977-1990 CJ5, CJ7, CJ8 & Cherokee SJ

$31.99

Engine Mount, Front?Poly Black

21102G

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1977-1990 CJ5, CJ7, CJ8 & Cherokee SJ Energy

$31.99

53 Mount, Rear (transmission)

1370910

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1972-1990 CJ5, CJ7, CJ8 & Cherokee SJ Energy

$11.99

Mount, Rear (transmission)

52002625

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1987-1990 Wrangler YJ

$19.99

54 Stud, Insulator

5358879

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1976-1990 w/ manual transmission

$4.99

55 Insulator

945266

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1976-1990 w/ manual transmission

$1.99

55A Insulator Poly Red

21101R

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1976-1990 Energy Suspensions Polyurethane

$5.99

Insulator Poly Black

21101G

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1976-1990 Energy Suspensions Polyurethane

$5.99

56 Mount Kit

8128488K

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1978-1986 CJ5, CJ7 and CJ8 Scrambler

$32.99

57 Filter, Engine Oil

8993146

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1972-1982

$5.99

Filter, Engine Oil

3242397

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1983-1986

$5.99

Filter, Engine Oil

33004195

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1987-1990 w/ METRIC Threads

$7.99

Royal Purple Extended Life Oil Filter

RPL-10-47

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1976-1986 Special Particle Removal
1976-1986 Jeep CJ7 4.2L & 2.5L

$12.99

Years Covered: 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, & 1990

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