# Omix Piston 4.2L .030 79-90 Jeep CJ

Over time all internal engine wear surfaces become worn. This is true for crankshaft journals, connecting rods, camshaft lobes, piston rings, bearings, etc. When rebuilding a worn out engine youll need to replace them all in order to regain the engines original performance. And, lets face it, Jeeps need all the power we can get. Omix offers new high quality replacement engine parts to get your Jeep back on the road. This replacement piston fits 79-83 CJ5, 79-86 CJ7, 81-86 CJ8 Scrambler, 87-90 Wrangler YJ, 79-83 Cherokee / Wagoneer SJ, 79-87 J-Series Trucks and 84-86 Grand Wagoneer SJ models equipped with 4.2 liter six cylinder engines with 0.030- in. over-bore. Sold individually- use 6 per engine. Replaces OE 8134441.030

-   Engine Work May Be Required To Install This Part
-   Limited 5 Year Warranty
-   .030 Over

This Part Fits:

Year

Make

Model

Submodel

1979-1983

Jeep

Cherokee

Base

1981-1982

Jeep

Cherokee

Chief

1981

Jeep

Cherokee

Laredo

1983

Jeep

Cherokee

Pioneer

1979-1980

Jeep

Cherokee

S

1979-1980

Jeep

Cherokee

Wide Track

1979-1983

Jeep

Cherokee

Wide Track Chief

1979-1980

Jeep

Cherokee

Wide Track Golden Eagle

1980-1983

Jeep

Cherokee

Wide Track Laredo

1980

Jeep

Cherokee

Wide Track Limited

1979-1983

Jeep

CJ5

Base

1979-1980

Jeep

CJ5

Golden Eagle

1980-1983

Jeep

CJ5

Laredo

1982-1983

Jeep

CJ5

Limited

1979-1983

Jeep

CJ5

Renegade

1979-1986

Jeep

CJ7

Base

1979

Jeep

CJ7

Golden Eagle

1980

Jeep

CJ7

Golden Hawk

1980-1983,1985-1986

Jeep

CJ7

Laredo

1982-1983

Jeep

CJ7

Limited

1979-1986

Jeep

CJ7

Renegade

1984-1986

Jeep

Grand Wagoneer

Base

1984-1985

Jeep

Grand Wagoneer

Limited

1979-1987

Jeep

J10

Base

1981-1985

Jeep

Scrambler

Base

1985

Jeep

Scrambler

Laredo

1985

Jeep

Scrambler

Renegade

1982-1983

Jeep

Scrambler

SL

1982-1984

Jeep

Scrambler

SR

1980-1982

Jeep

Wagoneer

Base

1982-1983

Jeep

Wagoneer

Brougham

1980-1983

Jeep

Wagoneer

Limited

1987-1990

Jeep

Wrangler

Base

1988-1990

Jeep

Wrangler

Islander

1987-1990

Jeep

Wrangler

Laredo

1988

Jeep

Wrangler

S

1988-1990

Jeep

Wrangler

Sahara

1987-1988

Jeep

Wrangler

Sport

## Details

- **Price:** 148.53 CAD
- **Vendor:** OMIX
- **Type:** Pistons - Cast - Single

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 148.53 CAD | In stock |

## Images

- Photo - Primary

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/omix-piston-4-2l-030-79-90-jeep-cj)
> Updated: 2026-07-20