Engine For Jeep J-Series

Engine For Jeep J-Series. The Jeep J-Series pickup—including models like the J10 and J20—stands as one of the most iconic and capable 4x4 trucks ever built. Whether you're restoring a classic trail rig or keeping a vintage workhorse alive, a reliable used engine is the smart, cost-effective solution. At First Used Auto Parts, we offer tested, warrantied used Jeep J-Series engines with nationwide shipping, including throughout California.

Why Buy a Used Engine for Your Jeep J-Series? Engine For Jeep J-Series.

Produced from 1962 to 1988, the Jeep J-Series pickups were built tough, but decades of use can wear down even the strongest engines. A used OEM engine gives you the power and performance you need—without the high cost of rebuilding or retrofitting a modern engine.

✅ Affordable Restoration Power

Why spend thousands rebuilding a worn engine when you can get a ready-to-install used engine at a fraction of the cost?

✅ Original Fit & Function

We stock engines that match your J10 or J20’s original specs, preserving the truck’s value, drivability, and rugged charm.

Jeep J-Series Engines We Carry

We supply used engines compatible with most J-Series pickups:

🔧 AMC V8 Engines

• 5.9L AMC 360 V8 – Most common in J10 and J20 trucks

• 6.6L AMC 401 V8 – High-performance option for heavy-duty trims

🔧 Inline-Six Engines

• 4.2L AMC 258 I6 – Found in earlier and base models

• 3.8L Tornado I6 – Used in early 1960s J-Series models

Whether you’re working with a Gladiator-era J2000, J3000, or a later J10/J20, we help you identify the exact engine your build requires.

What Sets Our Engines Apart?

At First Used Auto Parts, all our Jeep J-Series engines are:

• ✅ Compression and leak tested for reliability

• ✅ Visually inspected for wear and damage

• ✅ Backed by a limited warranty

• ✅ Carefully matched to year, model, and engine codes

We ensure your engine is not only functional—but the right fit for your vehicle.

How to Order the Right Engine for Your J10 or J20

Step 1: Gather Your Vehicle Details

Have your model year, engine size, and VIN (if available) ready. This helps us find an exact match for your J-Series truck.

Step 2: Browse or Call

Explore our online inventory, or talk to our team of vintage Jeep experts. We’ll guide you to the right engine based on your truck’s specifications.

Step 3: Get a Custom Quote

We’ll give you a free, competitive quote and arrange nationwide shipping, including to all of California—from Los Angeles to Sacramento.

Nationwide Service – California and Beyond

Whether you’re restoring a J10 in Arizona, working a J20 in Montana, or building a show-ready Gladiator in California, we can help. We ship to all 50 states and can even connect you with local installers.

Why Choose First Used Auto Parts?

• ✅ Affordable pricing on rare and classic Jeep engines

• ✅ Expert guidance from knowledgeable staff

• ✅ Fast, secure shipping across the U.S.

• ✅ Warranty coverage on every used engine

Restore Your Jeep J-Series Truck with Confidence

Your Jeep J-Series was built for work and the wild. Don’t let an aging engine sideline a piece of off-road history. First Used Auto Parts is here to help you bring it back to life with a dependable, cost-effective used replacement engine.

Call to Action:Looking for a used engine for your Jeep J10 or J20? Contact First Used Auto Parts today for a free quote and expert support!