E39-Engine

A very popular upgrade for track cars. By replacing your original 92 degree thermostat with a 71 degree thermostat, you are allowing the coolant to...

Poly transmission mounts are a great way to tighten up your shifting experience. We have tested many mounts over the years and believe Revshift mak...

The OEM BMW water pump pulley on the M5x series of engines is plastic and can easily become brittle and break.  We have been selling our aluminum w...

Mixing the best of both worlds. Our regular tapped aluminum thermostat housing has become a fan favorite to easily add an aftermarket coolant gauge...

What do you get the guy that has everything? The final touch to his fan clutch delete. This machined cap is anodized black and covers the threads o...

The stock water pump pulley is plastic from the factory and has been known to crack over time from heat cycles and stress. The water pump is an imp...

Most of the time, the places you need to tap into the oil system aren't in the greatest position. It is usually in a spot that is hard to get to. ...

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 ...

The stock power steering pump pulley on our BMWs are plastic, and allthough they do the job, over time they can become brittle and break, leaving y...

There is no denying that SPAL electric fans are a great upgrade over the stock electric fan or mechanical clutch fun. But purchasing the fan is onl...

Hose clamps, hose clamps, we could have a whole discussion on these, but when it comes down to it, the last thing you want to do is use cheap big b...

The stock pivot pin is made of plastic and over time, from use and heat cycles, the pin can wear down to a nub or shatter completely leaving you st...

Freshen up your engine bay with this OEM BMW ///M logo oil cap. This is also a great addition if your current oil cap does not seal properlly anymo...

I love goooooold. This high quality gold heat tape is the perfect solution to wrap and protect wires, cables, hoses, fuel lines, intakes, charge pi...

Fuel starvation in high g corners, especially below a half tank, can be a major problem on track with your E30 or E36. This problem has now been s...

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...

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...

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...

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...

Finding an easy solution to tap into the oil system can often be a challenge but look no more. This vanos banjo bolt to AN fitting is the perfect s...

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 ...

Looking for an alternative to the plastic solid motor mounts on the market?  Revshift came out swinging and is now announcing their solid drift mou...

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...

These gaskets fit at the end of your headers to your exhaust midpipe.  Replace yours with these high quality OE replacements. Kit Includes 2 gasket...

Looking to upgrade your plastic pulleys for lightweight aluminum? The stock pulleys on these BMW engines become brittle and break with use and heat...

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...

This little gasket may seem small, but it can cause a lot of leaks.  This gasket fits between your engine block and your oil filter housing.  These...

If you're looking to add that little extra touch to your engine bay, then our deluxe exhaust stud nuts may be what you're looking for. These exten...

One of the most popular modifications on the OBD2 M52 engines, is to M50 manifold swap it from an earlier OBD1 version.  The M50 manifold has short...

There is no mistaking the 6 speed ZF transmission that came in the E46 330i ZHP, M3, and E39 M5 were great transmissions.  They can hold a lot of p...

A common issue on the S6S420G transmission from the E46 M3 and E39 M5 is slop from the 5th and reverse gear.  BMW realized this, and made a solutio...