Jeep YJ Wrangler 4.2L 6 cylinder Engine Parts - Best Reviews & Prices at 4WP

Jeep YJ Wrangler 4.2L 6 cylinder Engine Parts

Make Sure It Fits Your Vehicle

Factory style replacement 4.2L 258 6 cylinder engine parts for your 1987-95 YJ Wrangler. There's a lot to love about your YJ, including the occasionally controversial square headlights. However, it pays to remember your vehicle's series started way back in model year 1987. Jeep Wrangler value depends on more than quirky vintage charm: it depends on a clean engine. Keep your pre-1991 4.2L inline 6 in good condition with this full selection of parts.

Everything in One Place
Here at 4 Wheel Parts, we listened to customer requests and came up with a simple-to-navigate catalog. Simply take a look at the Jeep 4.2 engine diagram, and then click the number next to the part you need. If you don't see it right away, perform a search or browse the items this category. Pumps, gaskets, cylinder heads, timing chains, valve lifters, engine mounts and much more: All of the YJ engine parts you need are right here.

Quality and Value
Good quality and low prices matter for everything you need, whether it's a 1989 Jeep Wrangler 4.2 intake manifold or a replacement YJ valve cover gasket. That's why we've filled this page with parts that meet or exceed the OEM specs for every 1987-1990 Jeep Wrangler 4.2 engine. In addition, we're completely committed to our price guarantee. We offer one of the best price-match program available anywhere: Order now, and take up to 90 days to find a lower advertised price.

Why Rebuild Your 4.2L YJ Engine?
As many Jeepers have discovered, doing engine work is one of the toughest and most rewarding projects you can undertake. Whether you're giving a longtime off-roading companion some necessary maintenance or fixing up a recent boneyard acquisition, nothing is quite like feeling a defunct block roar back to life after hours of exacting work. Build your YJ back to its original glory with OEM parts, or throw in a few upgrades from our selection of aftermarket components. Qualified orders over $99 get free ground shipping, so order everything you need and get started on your project as soon as possible.

The Jeep Wrangler is a beast. Based on the rugged Jeeps used during WWII, they were born to eat up the rough stuff and conquer any terrain. If you've got a 4.2L inline six-cylinder 1987 Jeep Wrangler engine, you can beef it up and head to the bog or Slickrock knowing it'll bring you home.

Fuel Efficiency
Peak torque and horsepower for the Jeep 4.2 engine is lower than the 2.5L option the Wrangler may have come with, which means it's more fuel efficient. If you're climbing steep grades, have heavy tow-loads or are heading to altitudes above 8000 feet, the heftier 4.2 maintains performance better than the 2.5L due to reduced engine power in those conditions.

The 1990 Jeep Wrangler 6-Cylinder engine, soft top and removable doors is classic Jeep. Since that model came from the factory with an inline six, the ride is smoother than a V6, with comparable MPG.  If you have the budget and want to go all-in, a diesel turbo can be dropped in to improve fuel economy.

Replacement Parts
Get and exploded 1990 Jeep Wrangler engine diagram if you're upgrading, repairing or replacing the motor yourself; this enables you to see each part and component all at once, detailing placement. It also comes in handy when scouring the Internet for the right replacement parts. Engine specifications change every few years, and if you picked the Jeep up from Craig's list or a used car dealer, it might already have modifications. Going from a manual transmission to automatic and a straight 4-engine to a straight 6-engine may require adapters for the transitions to go smoothly.

At 4WP, we have the parts you need at the best prices around. If you find a better price within 90 days of purchase, we'll refund the difference. Go online and place your order today. Our warehouses are stocked with thousands of name brand parts, ready to ship and get you back on the trail.

140 Product Groups
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