E21-Engine

We recommend this relay harness for wiring in single or dual high flow fuel pumps. This harness was built with the BMW 3-series in mind.  Wires ar...

Changing oil is an inevitable necessity on not just BMWs but all cars. It is not always the most glamorous job, but it must be done. If this is a...

Looking to have your BMW fuel injectors rebuilt but don't think you have the tools or are up to the task?  No problem.  We are now offering an inje...

If you are trying to install a cold air intake on an older BMW that has a M20, M30, or M42 you may find it difficult has the MAF is square, and mos...

A popular upgrade on BMWs is to switch from a 3" MAF to a 3.5". The 3.5" MAF can be found on 540i, 740i and some porsche models. To accomplish thi...

Are you adding a custom exhaust to your BMW or repairing your old one?  You might need to add a custom O2 sensor exhaust bung.  These high quality ...

This aluminum heat tape is flexible with a super strong adhesive backing. This will thermal insulate up to 2000 degrees F. Made of one mil aluminiz...

We never stop looking for the best possible products for your car. Having a magnetic drain plug for your oil is essential in not only alerting you...

We never stop looking for the best possible products for your car. Having a magnetic drain plug for your oil is essential in not only alerting you...

If you know you know.  BMW used to this blue braided hydraulic clutch hose on all their cars, but recently superseded it to a generic (lower qualit...

Have a tight clearance on your headers?  The stock copper exhaust nuts can cause issues on some aftermarket headers and turbo manifolds.  Our low p...

When I first used this product, I thought it was magic. Originally developed for the US military, this self sealing tape is a must to keep in your...

Attaching the oil drain line on our turbo can be a challenge.  Because of this, Rally Road created an extended turbo oil drain fitting to make it e...

There are many reasons you may want to convert your rubber fuel line to an AN system, and this adapter makes it a breeze.  Add an aftermarket fuel ...

This is a common crush copper crush washer gasket used all over the BMW engine. The most used application for this gasket is for the radiator auxil...

If you are installing aftermarket headers, or a turbo manifold, it is most likely the stock exhaust studs will be too short.  Our extended exhaust ...

Our high quality 3" silicone couplers are perfect for attaching cold air intakes to your MAF sensor. These couplers are made from 4 ply reinforced ...

If you're looking for stiffer motor mounts for your M10 E30 (318), this is it. We have used and tested all different types of bushings over the yea...

When you have to deal with different fuel components, it can be a challenge to stop the fuel flow easily. This is especially true when replacing fu...

The rear main seal on our BMWs commonly leak and should be replaced.  It is also recommended to replace this seal anytime you remove the transmissi...

The OE quality flex joint is made of high quality rubber and is reinforced with advanced fiber materials. The manufacturer recommends the flex disc...