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.