BMW Engine Parts for BMW 3 Series E30 (1984-1991)

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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.

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Packaged by Turner - Corporate Logo
T#:337971
Part#: 11311405081
In Stock
Starting at $ 82.99 USD
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Starting at $ 82.99 USD
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The timing chain tensioner from the 1995 E36 M3 is a great upgrade for other Motorsport models - 1988-1991 E30 M3 and 1989-1995 E34 M5! This tensioner virtually eliminates the cold start-up engine rattle so common with the S14 and S38 engines. It makes the whole engine quieter and smoother. Any new tensioner will accomplish that but the S50 tensioner has several new features that make it superior to the original design. This unit also has a internally loaded spring, so installation is much easier than the old style tensioner (no need to squeeze the spring and hold it while installing). Includes oil seal ring (not pictured).

This item fits the following BMWs:
1985-1989 E24 BMW M635CSi M6 - M88/3, S38B35 engine
1988 E28 BMW M5 - M88/3, S38B35 engine
1988-1991 E30 BMW M3 - S14 engine
1989-1995 E34 BMW M5 - S38 engine
1995 E36 BMW M3 - S50B30US engine
1994-1999 E36 BMW M3 Euro - S50B30 and S50B32 engines
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Packaged by Turner - Corporate Logo
T#:554430
Part#: 64521706826KT1
In Stock
$ 168.23 USD
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$ 168.23 USD
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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

Fits the following BMWs:
1984-1991 E30 BWM 325, 325i/is/ix, 325e/es

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Packaged by Turner - Corporate Logo
T#:556733
Part#: E30M20KT
In Stock
Sale - Save 3% $ 341.99
$ 331.63 USD
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Sale - Save 3% $ 341.99
$ 331.63 USD
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Often an oversight in maintenance, ignition components are also susceptible to wear and tear. Spark Plugs can accumulate carbon, reducing the spark intensity and it's ability to properly ignite the air/fuel mixture, leading to misfires and generally declining performance. Other ignition components, such as coils, boots, wires, caps, and rotors, can also wear out over time due to factors like heat and contamination, preventing the current from reaching the spark plug.

To start over fresh with all new components, we now offer these Ignition Service Kits. Each kit comes with brand new OE quality components, replacing any potential fault points in your ignition system for peak performance!

See kit contents below for a complete list of included components.

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Burger Motorsports - Corporate Logo
T#:26404907
Part#: 12MMSPG
In Stock
$ 35.00 USD
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Spark Plug Gapper Tool BMS Billet is essential for accurately adjusting the gap of spark plugs. This precision tool ensures that each plug is set to the exact specifications required for optimal engine performance. Made in the USA, it features a 12mm plug thread size, making it suitable for a wide range of applications.

  • Precision Adjustment: Allows for accurate gap adjustments to ensure optimal spark performance and engine efficiency.
  • Speed and Efficiency: Streamlines the process of gapping plugs while maintaining high precision, saving time and effort.
  • High-Quality Construction: Crafted from billet materials for durability and reliability, ensuring long-term use.
  • Lifetime Replacement Program: Comes with a lifetime replacement guarantee, reflecting confidence in the tool's quality and performance.

Upgrade your spark plug maintenance with the Spark Plug Gapper Tool BMS Billet for a reliable and precise solution.

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Packaged by Turner - Corporate Logo
T#:20386734
Part#: 11311469240T2KT
Ships in 5 Business Days
Sale - Save 4% $ 83.99
$ 80.31 USD
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Sale - Save 4% $ 83.99
$ 80.31 USD
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Often overlooked, your timing belt is a crucial component that requires replacement every 60,000 miles. It is common for an unserviced timing belt to snap without warning, leaving you with bent valves and costly repairs. Included in this kit are the following: Continental (OEM) Timing Belt INA (OEM) Tensioner Radiator Drain Plug
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BMW E28 / E30 / E43 - M20 Complete Cylinder Head Basic Replacement Ki...
Upgrade to the less restrictive cylinder head found on the M20 2.5L
Packaged by Turner - Corporate Logo
T#:2810081
Part#: 11121707032-3KT
Ships in 8 Business Days
Sale - Save 3% $ 1,559.99
$ 1,513.14 USD
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Sale - Save 3% $ 1,559.99
$ 1,513.14 USD
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Includes all of the necessary components to service and replace the head on your M20 powered BMW

Packaged by Turner - Corporate Logo
T#:401678
Part#: M20_11KT
Ships in 4 Business Days
Sale - Save 3% $ 265.99
$ 257.41 USD
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$ 257.41 USD
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 The timing belt on the M20 engine should be replaced every 50,000 miles. The Gates Racing's timing belt this kit includes  is constructed of HNBR elastomeric composites. That being said, they are 300% stronger than the OE belt & deliver up to three times the heat resistance. Also included in this kit are the following:

  • Gates Racing Timing Belt
  • Tensioner
  • Tensioner Spring and Bolt
  • Water Pump & Gasket
  • Thermostat & Gasket
  • Camshaft Seal
  • 1 Liter of Coolant
  • Radiator Drain Plug

This kit includes sufficient coolant for a water pump replacement. If you intend to perform additional cooling system maintenance, pick yourself up an additional bottle of coolant.

 

For vehicles with production date up to 09/1987.

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Packaged by Turner - Corporate Logo
T#:401679
Part#: M20_11KT1
Ships in 5 Business Days
$ 260.99 USD
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$ 260.99 USD
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 The timing belt on the M20 engine should be replaced every 50,000 miles. The Gates Racing's timing belt this kit includes  is constructed of HNBR elastomeric composites. That being said, they are 300% stronger than the OE belt & deliver up to three times the heat resistance. Also included in this kit are the following:

  • Gates Racing Timing Belt
  • Tensioner
  • Tensioner Spring and Bolt
  • Water Pump & Gasket
  • Thermostat & Gasket
  • Camshaft Seal
  • 1 Liter of Coolant
  • Radiator Drain Plug

This kit includes sufficient coolant for a water pump replacement. If you intend to perform additional cooling system maintenance, pick yourself up an additional bottle of coolant.

 

For vehicles with production date from 09/1987.For vehicles with production date from 09/1987.

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Packaged by Turner - Corporate Logo
T#:559281
Part#: M20TBELTKT
In Stock
Sale - Save 4% $ 73.99
$ 70.79 USD
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Sale - Save 4% $ 73.99
$ 70.79 USD
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Burger Motorsports - Corporate Logo
T#:21012590
Part#: F-G-PORTINJCONMO
In Stock
$ 349.00 USD
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The Burger Motorsports JB4 Port Injection Controller attaches to the JB4 allowing it to directly control both traditional port injection kits and WMI port injection kits. The JB4 port injection controller is a fully integrated solution allowing enhanced port injection mapping and safety. For example the JB4 port injection controller: 1) Uses low fuel pressure in conjunction with boost pressure to evaluate injection pressure and adjust PI IPW dynamically as required to maintain consistent flow volume. This becomes particularly important in applications that are at the edge of their low fuel pressure supply. As low pressure drops or oscillates port injection IPW must be dynamically adjusted to avoid run lean conditions. 2) Monitors pedal input, clutch input, gear, throttle position, etc, allowing more advanced mapping and instant cut of PI when letting off the gas or when traction control kicks in to avoid backfires. 3) Monitors AFR in both banks and can cut PI flow in the event a misfire event is detected preventing a potentially lean condition. 4) Monitors current through the injectors and sends a signal back to the JB4 altering it of various problems including a clogged or disconnected injector, blown electrical fuse, loose ground, etc. 5) Monitors fuel trims in each bank and failsafe's in the event of a mismatch of more than 15% indicating a potential boost single cylinder boost leak or injector flow issue. 6) Allows easy user adjustment of overall fuel volume using linear "Fuel Bias 0-100" values by RPM, greatly reducing the typical mapping complications when making manual tuning changes. 7) Integrates into the JB4 multi-map system which produces on-the-fly PI mapping changes when you change maps when boost is reduced in lower gears, or during anti-lag engagement. 8) When equipped with a JB4 integrated flex fuel sensor or JB4 virtual flex fuel sensor can automatically adjust port injection volume based on the E85 mixture allowing for easy mixture changes. 9) Enhanced mapping logic such as tip in supplement to boost port injection during sudden transitions like spool up or gear changes where the high-pressure pump tends to have problems keeping up. 10) Does not require a separate interface and cable for mapping and tuning port injection. It's all done right through the JB4 interface and logs greatly simplifying the process. 11) Includes an extra output to run your second fuel pump OR WMI PUMP (for port injection meth), eliminating the need for an extra Hobbs switch.
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Packaged by Turner - Corporate Logo
T#:337965
Part#: 11131727983
In Stock
Starting at $ 29.99 USD
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Starting at $ 29.99 USD
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E30 M3 Lower Oil Pan Gasket. Have a leaky oil pan? It may be failed oil pan gaskets (either upper or lower). This is the lower oil pan gasket for the S14 engine. We offer this gasket in both cork and paper gasket media.
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Packaged by Turner - Corporate Logo
T#:2587338
Part#: S14BOTTOMENDKT
Ships Jul 1, 2025
$ 74.99 USD
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$ 74.99 USD
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All of the components necessary when servicing the bottom end or rod bearings of your S14 engine.


Burger Motorsports - Corporate Logo
T#:583132
Part#: BMSBSPGT14MM
Ships Jul 9, 2025
$ 35.00 USD
Free Shipping on orders $49 and up

BMS Billet Spark Plug Gapper Tool - 14mm is an essential tool for achieving accurate and consistent spark plug gapping, ideal for automotive enthusiasts and professional mechanics alike. This precision tool helps maintain optimal plug performance by providing reliable, consistent gaps. Available in both 14mm and 12mm plug thread sizes, this tool is proudly made in the USA to deliver durability and precision.

  • Precisely gaps spark plugs for enhanced engine performance and efficiency
  • Speeds up the gapping process while ensuring accuracy and uniformity
  • Available in two sizes (14mm and 12mm) for a wider range of compatibility
  • Optional specialty feeler gauge included with 4 blades in thicknesses of .018, .020, .022, and .024
  • Made in the USA for premium quality and durability
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Packaged by Turner - Corporate Logo
T#:22822554
Part#: E30HEADRPLCKT
Ships in 8 Business Days
Sale - Save 3% $ 1,561.99
$ 1,514.73 USD
Sale - Save 3% $ 1,561.99
$ 1,514.73 USD
Upgrade your BMW M20 2.5L and 2.7L engine with our Complete Cylinder Head Basic Replacement Kit . This kit includes the following essential components:
  • Cylinder Head Washer
  • BMW Coolant / Antifreeze - 1 gallon
  • Copper Exhaust Lock Nut
  • Oil Filter
  • Cylinder Head Bolt Set
  • Engine Oil Drain Plug Washer
  • Dielectric Spark Plug Boot Protector
  • BMW TwinPower Turbo 5W-30 Engine Oil
  • Cylinder Head Gasket
  • Assembly Lube - 4 oz
  • Engine Oil Drain Plug
  • M20 Cylinder Head - complete
Ensure a seamless and efficient replacement process for optimal performance.
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Packaged by Turner - Corporate Logo
T#:338003
Part#: 12141720852
Ships Sep 23, 2025
Starting at $ 108.99 USD
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Starting at $ 108.99 USD
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This crank shaft position sensor (CPS) provides the engine computer with engine speed data via the harmonic balancer. It mounts off the engine block and reads the front crank pulley to tell the engine what position the engine internals are in. This sensor is crucial for starting the car as the ECU will not allow the engine to start without this signal. It fits all M20 engines in the E30 and E34. A lot of times the sensor is covered in oil, broken from a spinning belt, or the clearance to the pulley is not correct (should be .040"). Interchangeable with #12141720856.

Brand Options:
Original BMW - more expensive but higher quality and more consistent reliability. The sensor itself has a metal housing that is more durable and will not be affected by heat as much.
Aftermarket/Overseas manufacturer - cheaper than OE BMW but less quality and potentially less consistent. Plastic housing is more susceptible to damage from heat.

This item fits the following BMWs:
1987-1991 E30 BMW 325e 325es 325i 325is 325ix 325ic
1989-1990 E34 BMW 525i
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Packaged by Turner - Corporate Logo
T#:337970
Part#: 11311312535
Ships Nov 4, 2025
Starting at $ 336.99 USD
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Starting at $ 336.99 USD
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The BMW Motorsport Cam Gear retards the exhaust camshaft of the 88-91 M3 and 88-89 M5 and M6. This allows for better exhaust scavenging, which in turn gives a moderate torque increase. This is very useful in day-to-day driving. This cam gear came stock on the EVO2 M3. (+11 lb./ft torque increase at 3000 rpm on M3 and +22 lb./ft on a M5/M6). Kit includes Cam gear and valve cover gaskets. Better acceleration and improved torque for your M5/M6

This item fits the following BMWs:
1988-1991 E30 BMW M3
1988 E28 BMW M5
1987-1989 E24 BMW M6
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Packaged by Turner - Corporate Logo
T#:554408
Part#: E30318ISBELTKT
Back Ordered
$ 176.99 USD
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$ 176.99 USD
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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

Fits the following BMWs:
1989-1991 E30 BWM 318is

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Packaged by Turner - Corporate Logo
T#:556688
Part#: E30M42TISKT
Back Ordered
Sale - Save 3% $ 376.99
$ 365.58 USD
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Sale - Save 3% $ 376.99
$ 365.58 USD
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Often an oversight in maintenance, ignition components are also susceptible to wear and tear. Spark Plugs can accumulate carbon, reducing the spark intensity and it's ability to properly ignite the air/fuel mixture, leading to misfires and generally declining performance. Other ignition components, such as coils, boots, wires, caps, and rotors, can also wear out over time due to factors like heat and contamination, preventing the current from reaching the spark plug.

To start over fresh with all new components, we now offer these Ignition Service Kits. Each kit comes with brand new OE quality components, replacing any potential fault points in your ignition system for peak performance!

See kit contents below for a complete list of included components.

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Packaged by Turner - Corporate Logo
T#:42099850
Part#: 11142247867TKT
In Stock
New Item
$ 34.99 USD
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Protect your BMW engine and drivetrain with the OE Rear Main/Crankshaft Seal Kit, a critical upgrade for leak-free performance and longevity.
Packaged by Turner - Corporate Logo
T#:41188174
Part#: 11137535106TKT
In Stock
New Item
$ 6.99 USD
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$ 6.99 USD
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Includes a one time use crush washer.

Packaged by Turner - Corporate Logo
T#:337964
Part#: 11131727974
In Stock
Sale - Save 11% $ 8.99
Starting at $ 7.99 USD
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Sale - Save 11% $ 8.99
Starting at $ 7.99 USD
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E30 M3 Upper Oil-Pan Gasket. Have a leaky oil pan? It may be failed oil pan gaskets (either upper or lower). This is the UPPER oil pan gasket for the S14 and M10 engines. We offer this gasket in both cork and paper gasket media.
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Packaged by Turner - Corporate Logo
T#:401689
Part#: OILTEMPGAUGEBRKK
Ships in 4 Business Days
Sale - Save 3% $ 182.99
$ 177.50 USD
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Sale - Save 3% $ 182.99
$ 177.50 USD
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The EVO series from ProSport Gauges is an award winning, industry leading option for those looking to push their car's limits. They allowing you to monitor crucial engine functions in one quick glance with advanced precision. Featuring a dual color readout, you can customize your readout to your liking. Offering a user friendly readout with a digital reading in the center with a bar-graph style sweep around the gauge as well.
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Packaged by Turner - Corporate Logo
T#:401690
Part#: OILTEMPGAUGEKT1
Ships in 3 Business Days
Sale - Save 3% $ 182.99
$ 177.50 USD
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Sale - Save 3% $ 182.99
$ 177.50 USD
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The EVO series from ProSport Gauges is an award winning, industry leading option for those looking to push their car's limits. They allowing you to monitor crucial engine functions in one quick glance with advanced precision. Featuring a dual color readout, you can customize your readout to your liking. Offering a user friendly readout with a digital reading in the center with a bar-graph style sweep around the gauge as well.
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Packaged by Turner - Corporate Logo
T#:36066227
Part#: 11241310515KT2
Ships in 1-2 days
New Item
Sale - Save 24% $ 728.99
$ 553.62 USD
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Sale - Save 24% $ 728.99
$ 553.62 USD
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If you're the proud owner of an S14-equipped, chances are you're passionate about enhancing your vehicle's performance and longevity. One crucial upgrade that can significantly improve your driving experience is Turner Motorsport's WPC Rod Bearing Replacement Kit, designed for enhanced durability and wear protection. Prevent costly mechanical failures and increase engine life with our WPC-Treated Performance Rod Bearing Service Kit!

Enhanced Durability: The WPC Performance Rod Bearing Replacement Kit is designed with superior materials and manufacturing processes. WPC treatment reinforces the surface of the bearings, making them highly resistant to wear, which is essential for aging engines like the S14. This durability ensures your engine will stand the test of time, even under strenuous driving conditions. Improved Performance: By reducing friction and wear, WPC-treated rod bearings allow for smoother and more efficient engine operation. This translates into increased power and responsiveness, providing you with a more exhilarating driving experience. Whether you're tearing up the track or enjoying a spirited weekend drive, you'll notice a difference in your vehicle's performance. Preventative Maintenance: Proactively replacing your rod bearings and bolts with the WPC Performance Kit can prevent potential engine failures. As engines age and accumulate miles, wear and tear become inevitable. These components help you address this issue head-on, preventing costly engine damage and repairs down the road. This is especially crucial for BMW E30 M3 owners who value their investment. Long-Term Cost Savings: While the initial investment in a WPC Performance Rod Bearing Replacement Kit may seem substantial, it's a small price to pay for the long-term benefits. Preventing engine failure and costly repairs can save you thousands of dollars over the life of your vehicle, not to mention the peace of mind that comes with knowing your BMW is built for reliability. Included in the kit:

8 - Turner Motorsport WPC-Treated "Race Series" Rod Bearing Shells 1 - Oil Pan Gasket 1 - Oil Filter Kit 1 - Oil Drain Plug 8 - Genuine BMW Connecting Rod Bolts 1 - Liqui Moly 10w-40 Engine Oil - 5 Liters 1 - Liqui Moly 10w-40 Engine Oil - 1 Liters 1 - Assembly Lube - 4 oz

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Packaged by Turner - Corporate Logo
T#:29998255
Part#: TMSS14IGNSKT
Ships in 4 Business Days
$ 557.99 USD
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Often an oversight in maintenance, ignition components are also susceptible to wear and tear. Spark Plugs can accumulate carbon, reducing the spark intensity and it's ability to properly ignite the air/fuel mixture, leading to misfires and generally declining performance. Other ignition components, such as coils, boots, wires, caps, and rotors, can also wear out over time due to factors like heat and contamination, preventing the current from reaching the spark plug. To start over fresh with all new components, we now offer these Ignition Service Kits. Each kit comes with brand new high quality components, replacing any potential fault points in your ignition system for peak performance! The kit includes: Bosch Spark Plugs Karlyn Spark Plug Wires Bremi Distributor Cap Genuine BMW Distributor Rotor
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Packaged by Turner - Corporate Logo
T#:554431
Part#: E30M3ACCKT
Ships Jul 9, 2025
$ 83.99 USD
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$ 83.99 USD
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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes the belts and tensioner bar.

Fits the following BMWs:
1985-1991 E30 BWM M3

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Packaged by Turner - Corporate Logo
T#:337966
Part#: 11131730234
Ships Jul 21, 2025
Starting at $ 7.99 USD
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Starting at $ 7.99 USD
Free Shipping on orders $49 and up
This oil pan gasket fits BMW E30 325e 325es 325i 325is 325ic with M20 engine and E34 525i 1989-1990.

This item fits the following BMWs:
1984-1991 E30 BMW 325e 325es 325i 325is 325ic
1989-1990 E34 BMW 525i
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Packaged by Turner - Corporate Logo
T#:4083
Part#: E30M3-EVOIII-INJ
Back Ordered
$ 2,272.95 USD
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$ 2,272.95 USD
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Our racing fuel injection upgrade for the E30 M3 2.5 consists of four Evo III fuel injectors, Evo III Air flow meter and custom calibrated performance chip. This kit was originally designed for use on the TMS 2.5 liter engine conversion with: Stage 3 head, Schrick cams, Evo III header and straight non cat exhaust but has been a successful upgrade on other variations of this set up. The addition of these components adds the ability to supply more fuel that the 2.5 liter high performance motor demands. Choose from 7800 or 8200 rpm redline (For off road/race use only).

Kit Includes:
1 x 13621466349 - Air Flow Meter
1 x Custom Turner Motorsport Peformance Chip
4 x 13641316511 - EVO 3 Fuel Injectors


This item fits the following BMWs:
1988-1991 E30 BMW M3
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