4.2 Liter (258) AMC 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 very alike 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 images to find parts in table below
| Item # |
Description |
Years |
Color/ Comments |
Part Number |
Price |
Add To Cart |
| #28 |
Valve, Intake |
81/90 |
Standard except “VAM” engine |
3240768 |
$15.99
|
|
|
Valve, Intake |
81/90 |
.015" Oversize |
3240167 |
$12.99
|
|
|
Valve, Intake |
81/90 |
Standard |
3237464 |
$24.99
|
|
|
Valve, Intake |
81/90 |
.003" Oversize |
3240163 |
$18.99
|
|
|
Valve, Intake |
81/90 |
Standard |
3237465 |
$12.99
|
|
| #29 |
Valve, Exhaust |
81/90 |
Standard except “VAM” engine |
3240767 |
$18.99
|
|
|
Valve, Exhaust |
81/90 |
.015" Oversize |
3240164 |
$20.99
|
|
| #30 |
Deflector |
72/90 |
Standard |
3218976 |
$0.99
|
|
|
Deflector |
72/90 |
.015" Oversize |
3218977 |
$0.99
|
|
| #31 |
Lock, Valve Retainer |
81/90 |
except “VAM” engine |
3180458 |
$0.99
|
|
| #32 |
Spring, Valve |
77/90 |
except “VAM” engine |
3228192 |
$5.99
|
|
| #33 |
Rocker Arm |
75/82 |
|
3223888 |
$4.99
|
|
|
Rocker Arm |
83/90 |
|
3242393 |
$4.99
|
|
| #34 |
Pivot, Rocker Arm |
80/90 |
|
3235090 |
$1.99
|
|
| #35 |
Bridge, Rocker Arm Pivot |
80/90 |
except “VAM” engine (no stud incl.) |
MRM1718 |
$3.99
|
|
|
Bridge, Rocker Arm Pivot |
81/86 |
except “VAM engine (includes stud) |
3237851 |
$4.99
|
|
| #36 |
Pivot Kit |
80/90 |
contains 2 pivots & 1 bridge |
3236513K |
$3.99
|
|
| #36a |
Rocker Arm Kit |
74/82 |
12 rocker arms and 6 aluminum pivots |
3223888K |
$59.99
|
|
|
Rocker Arm Kit |
74/82 |
12 rocker arms and 6 steel pivots |
3223888KL |
$59.99
|
|
| #36b |
Rocker Arm Kit |
74/82 |
2 rocker arms, 2 pivots and 1 bridge |
MRK5412 |
$16.99
|
|
| #37 |
Bolt, Rocker Arm Pivot |
72/90 |
|
9425708 |
$1.99
|
|
| #38 |
Tappet (Lifter) |
72/90 |
except “VAM” engine |
4740269 |
$6.99
|
|
| #39 |
Push Rod except “VAM” engine |
81/90 |
|
33002986 |
$2.99
|
|
|
Push Rod |
81/90 |
|
3242395 |
$2.99
|
|
|
Push Rod |
77/80 |
|
3227329 |
$2.99
|
|
| #40 |
Timing Cover |
75/86 |
|
3225186 |
$49.99
|
|
|
Timing Cover |
87/90 |
|
|
$0.00
|
|
| #41 |
Gasket & Seal Kit, Timing |
74/90 |
|
8129097 |
$6.99
|
|
| #42 |
Seal, Crankshaft Front |
72/90 |
|
33004681 |
$2.99
|
|
| #43 |
Gasket, Timing Cover |
72/90 |
|
53020487 |
$2.99
|
|
| #44 |
Chain, Timing |
72/90 |
|
3240781 |
$17.99
|
|
| #45 |
Sprocket, Camshaft |
72/90 |
|
3172306 |
$16.99
|
|
| #46 |
Kit, Timing |
72/90 |
|
8126681K |
$53.99
|
|
| #47 |
Damper, Vibration |
75/90 |
w/ V-belts |
3225201 |
$74.99
|
|
| #48 |
Slinger, Oil |
72/90 |
|
3173076 |
$1.99
|
|
| #49 |
Manifold, Exhaust |
72/79 |
|
8124999 |
$159.99
|
|
|
Manifold, Exhaust |
80/90 |
add 6-G444618 w/ no emissions pump |
3237427 |
$189.99
|
|
| #50 |
Gasket, Exhaust Manifold |
72/79 |
Intake to Exhaust Manifold |
3184277 |
$1.99
|
|
| #51 |
Gasket, Exhaust Manifold |
72/90 |
Manifold to Cylinder Head |
3242855 |
$15.99
|
|
| #52 |
Mount, Front |
77/90 |
CJ & SJ |
8128488 |
$13.99
|
|
|
Mount, Front |
87/90 |
YJ |
52019201 |
$8.99
|
|
| #53 |
Mount, Rear (transmission) |
72/90 |
CJ & SJ |
1370910 |
$11.99
|
|
|
Mount, Rear (transmission) |
87/90 |
YJ |
52002625 |
$19.99
|
|
| #54 |
Insulator |
76/90 |
w/ manual transmission |
945266 |
$0.99
|
|
| #55 |
Stud, Insulator |
76/90 |
w/ manual transmission |
5358879 |
$4.99
|
|
| #56 |
Mount Kit |
78/86 |
CJ-s |
8128488K |
$38.99
|
|
|
