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BMW Engine Parts

Engine Parts

Turner Motorsport has everything you need to upgrade your BMW through our stages of performance or to keep your car in peak condition with our range of the latest in proven OEM cooling parts. Upgrade your cooling system and engine performance with the selections below to give your BMW a performance and reliability advantage.

Alternator & Alternator Parts

Bosch Alternators are built especially for extremes of heat, cold and high demand. Your BMW deserves nothing less than the best, which is why BMW has used Bosch as an Original Equipment Alternator manufacturer for decades. Bosch alternators are built to last using the highest quality materials and the most technologically advanced processes. All alternator parts are 100% factory tested prior to and during remanufacturing to assure that they meet or exceed original equipment specifications. And every Bosch alternator is fully load tested to guarantee compliance with Bosch's strict performance specifications. Buy the best alternator for your BMW: Buy a Bosch Alternator!

Camshafts

Many times you can boost your mid-high end power with factory BMW parts such as these stock BMW camshafts. In some cases you can bolt these alternate cams into your engine for an instant power boost. BMW itself offered performance cams in some models. We offer upgrades using S50 / S52 cams, ZHP cams, and others that meet factory OE specs.

Cam Sprockets & Gears

Prior to the use of the VANOS self-adjusting cam sprockets all BMWs used a fixed cam sprocket/gear and in some cases, performance versions were available to retard or advance timing depending on the need. We offer factory BMW cam gear upgrades as well as our own adjustable units for proper setup and dialing in of intake and exhaust cams.

This category contains parts that fit the following chassis:

Crankcase Vent, PCV, and Oil Separator Systems

Every car has a crankcase vent system that is supposed to suppress oil from making it into the intake ports and combustion chamber. A good functioning system will separate oil from the atmosphere and return it to the oil pan (or collect it in a catch can) while allowing the leftover vapors to burn in the combustion chamber or recirculate through the system. This has always been known as a PCV system (Positive Crankcase Ventilation) but BMW has several other names for it - oil separator, crankcase vent (CCV), and cyclonic separator. Failures in the system will allow raw oil to enter the intake and eventually into the engine itself which can have disastrous effects on engine performance and longevity. As emissions regulations on oil and gas venting have gotten more stringent the PCV systems have gotten more complex and failure prone. And because the CCV is intertwined with other systems you could have rough running, loss of power, higher oil consumption, misfiring, stalling, or other annoying issues. There is no replacement interval for these so we recommend inspecting your crankcase vent system as part of your regular maintenance routines. Symptoms of a bad crankcase vent are: whitish or yellowish film on the underside of the oil cap, whistling/squealing noises (not caused by a belt), suction on the oil cap that makes it hard to unscrew, large amounts of white smoke from the exhaust, and excessive oil consumption.

Cylinder Head Parts & Head Bolts

Cylinder head parts include all of the pieces of the valvetrain, lifters, rocker arms, head studs, and head bolts. We sell the original BMW or OEM head parts as well as performance upgrades such as titanium valve retainers, upgraded springs, and head studs. We also sell valve shim kits which are perfect for DIY E30 M3 S14 and E46 M3 S54 valve adjustments.

Drive Belts, Pulleys, Tensioners

Your BMW's drive belts are wear items, and will degrade and crack over time. Don't wait until you have a belt failure... don't get stranded! Replacing your BMW's belts, such as the alternator belt, power steering belt, air conditioning AC belt, or serpentine belt is a low cost insurance policy to preventing a break down -- or worse, engine damage. We recommend checking your belts every 10,000 miles. If your belts have excessive cracks, dry rot, missing teeth and/or grooves, are cause noise, it's time for new ones.

While also inspecting your serpentine belts, also check for wear or resistance in the pulleys. The tensioner pulley and deflection pulley are the primary sources for belt squealing. The rubber-isolated pulleys can also break apart, leading to total belt failure. We sell the tensioner and deflection pulleys for the M50 engine family used in the E34, E36, E39, E46, X5, Z3, and Z4.

E30 M3 S14 Engine Parts

Turner Motorsport has been driving, racing, and building E30 M3s since we opened our doors in 1993. There's always a few running around our shop and the S14 still remains an iconic engine to this day. We stock most of the popular replacement engine components for the E30 M3, including OE BMW parts, OEM direct replacements, select approved aftermarket parts, and performance versions.

This category contains parts that fit the following chassis:

Electrical Sensors, Switches, & Relays

Electrical gremlins can be very frustrating. Luckily your BMW's electrical system is better than most, even if it's 25 years old. Here you will find electrical relays, sensors, switches, and modules for the engine, camshaft, and crankshaft. Our parts are OEM, Genuine BMW, or approved aftermarket brands that we have an excellent track record with. There is no middle ground with electrical parts - it either works perfectly or not. And there's nothing more frustrating than a new part that fails right out of the box. So it's important to choose quality replacement parts over a cheap but faulty piece.