BMW Engine Parts for BMW E90 M3 S65 4.0L

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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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OEM NGK Spark Plug Set - LKR8AP - E9X M3 S65
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NGK - Corporate Logo
T#:348135
Part#: 12120032273KT
In Stock
$ 161.99

This product was last offered at the strikethrough price on
09-14-2026

$ 119.99 USD
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$ 119.99 USD
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BMW recommends a spark plug change interval of 37,000 miles for the S65 engine. Replace the spark plugs on your E9X M3 with these OEM NGK spark plugs that are a direct replacement for the factory part # 12120032273.
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E9X M3 Performance Underdrive Pulley Kit
For vehicles with a production date from 05/2008+ & a counterclockwise rotating Power S...
Macht Schnell - Corporate Logo
T#:593749
Part#: 10.00.011
Ships on Nov 2, 2026
$ 349.00 USD
Free Shipping
$ 349.00 USD
Free Shipping
Free additional power to your M3’s rear wheels without sacrificing or compromising your BMW’s reliability. Machined from 6061-T6 aerospace aluminum, Macht Schnell Performance Underdrive Pulleys are strong as well as lightweight to limit parasitic drag from the accessories within a moderate level for maximum performance on or off the track. After machining and engraving, pulleys are then T3 hard anodized for additional strength, anti-corrosion & wear resistance. Our DualDrive design replaces the Crank Accessory & Power Steering Pulleys, resulting in an additional 9-14 HP and 7-9ft. lbs TQ gain for the M3. Gains are due to a reduction in power required to turn accessories; an increase in accessories lifespan due to lower speed will also result. All factory harmonics/balancing are undisturbed. Macht Schnell Performance Underdrive Pulleys have no negative effect on accessory operation and comes fully equipped with new belts. Already have this kit and need new belts? See T#14491 and T#14489 Performance Underdrive Pulleys Features: DualDrive design allows maximum performance, with minor effect on accessory speed Proper cooling temperatures are retained at proper levels on or off the track Maintains proper alternator speed, allowing sustained levels to sensitive control modules Machined from 6061-T6 aerospace aluminum T3 Hard-Anodized for maximum strength and corrosion/wear resistance No affects to crankshaft dampening or harmonics Simple bolt-on installation
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Innovate Motorsports - Corporate Logo
T#:28836410
Part#: 38770
In Stock at Vendor
$ 212.99 USD
Free Shipping on orders $49 and up

Features & Benefits:

Two configurable linear 0-5V analog outputs Ability to calibrate O2 sensors for maximum accuracy Includes LC-2 controller and Bosch wideband O2 sensor Comes with a program cable, manual, and a 10 ft. sensor cable Includes a 1-inch mild steel exhaust bung Innovate MTS serial in/out capability Integrated dual-color status LED (green/red) Patented DirectDigital™ wideband sensor control Positive lock connectors for all connections Real-time display data on screen or with the powerful LogWorks software Range:

AFR (Air-Fuel Ratio) range from 7.4:1 to 22.4:1 (0.5 to 1.5 lambda)

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Rogue Engineering - Corporate Logo
T#:553839
Part#: PP.S65.V8.B
Ships in 6 Business Days
$ 295.00 USD
Free Shipping
$ 295.00 USD
Free Shipping
Rogue Engineering has developed a power pulley kit that reduces the drag on specific pulleys while allowing others to remain at their same efficiency. This allows for perfect operation in daily driven vehicles without a hiccup or stutter. However, when the demand for power is requested, the power pulley kit allows for the freed power to become apparent. The term "power" pulley is a bit of a misnomer. Underdrive pulleys actually free up power by reducing the drag caused by the accessories. These pulleys are based off a calculated percentage from factory dimensions, so that particular component speeds are safely reduced without affecting their true purpose.
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Sunex - Corporate Logo
T#:391150
Part#: SUU884506
In Stock
9% off MSRP $ 31.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 28.99 USD
Free Shipping on orders $49 and up
9% off MSRP
$ 31.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 28.99 USD
Free Shipping on orders $49 and up
3/8" drive socket with 5/8" opening for most spark plugs
Innovate Motorsports - Corporate Logo
T#:22558994
Part#: INN3904
In Stock at Vendor
14% off MSRP $ 313.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 269.00 USD
Free Shipping on orders $49 and up
14% off MSRP
$ 313.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 269.00 USD
Free Shipping on orders $49 and up

Introducing the Innovate Motorsports MTX Digital Series "Dual Function" Gauges – now available! These 2 1/16" (52mm) gauges come with interchangeable faceplates and bezels, locking connectors for simplified installation, and MTS serial connections for seamless integration with other Innovate devices for data logging.

DISPLAY RANGE

  • Ethanol Content %: 0-100%
  • Temperature: -40-257 °F (-40-125°C)

KEY FEATURES

  • Ethanol Content
  • Error reporting for ethanol content sensor (Digital Display)
  • Fuel Temperature
  • Customizable exterior LED display
  • Programmable exterior LED color options
  • Selectable unit of measure in °F or °C
  • Programmable fuel temperature warning (outer LED)
  • 2-Configurable analog outputs
  • Ethanol Content: 0v = 0%, 5v = 100%
  • Fuel Temperature: 0v = -40 °F, 5v = 257 °F (-40-125°C)

MTX-D: Ethanol Content Percentage & Fuel Temp Gauge Kit includes Gauge (Black Faceplate, Black Bezel), Silver Bezel & White Faceplate, Harness, Program Cable (Serial), Ethanol Content Sensor, Quick Start Installation Guide.

Please note that this is a universal fitment gauge, and installation may vary depending on the vehicle.

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Rogue Engineering Power Pulley Set - E9X M3 (up to 05/2008)
For vehicles with a production date up to 05/2008 with single drive belt.
Rogue Engineering - Corporate Logo
T#:553840
Part#: PP.S65.V8.A
Ships in 8 Business Days
$ 295.00 USD
Free Shipping
$ 295.00 USD
Free Shipping
Rogue Engineering has developed a power pulley kit that reduces the drag on specific pulleys while allowing others to remain at their same efficiency. This allows for perfect operation in daily driven vehicles without a hiccup or stutter. However, when the demand for power is requested, the power pulley kit allows for the freed power to become apparent. The term "power" pulley is a bit of a misnomer. Underdrive pulleys actually free up power by reducing the drag caused by the accessories. These pulleys are based off a calculated percentage from factory dimensions, so that particular component speeds are safely reduced without affecting their true purpose.
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Schrick - Corporate Logo
T#:2500
Part#: TMS2500
Ships on Feb 1, 2027
$ 6,478.60 USD
Free Shipping
$ 6,478.60 USD
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This is one full set of Schrick cam shafts, 4 cams total, for the S65 V8 M3 engine. These cams are the 292 degree version, and includes two intake cams and two exhaust cams. Professional installation is a must due to the complexity of the dual VAN0S V8 motor.
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Schrick - Corporate Logo
T#:2474
Part#: TMS2474
Ships on Feb 1, 2027
$ 6,478.60 USD
Free Shipping
$ 6,478.60 USD
Free Shipping
This is one full set of Schrick cam shafts, 4 cams total, for the S65 V8 M3 engine. These cams are the 284 degree version, and includes two intake cams and two exhaust cams. Professional installation is a must due to the complexity of the dual VAN0S V8 motor.
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OEM NGK Spark Plug - LKR8AP - E9x M3, E60 M5, E63 M6
We Price Match - Give Us A Call or Chat!
NGK - Corporate Logo
T#:20553
Part#: LKR8AP
In Stock
$ 20.99

This product was last offered at the strikethrough price on
09-14-2026

$ 14.99 USD
Free Shipping on orders $49 and up
$ 14.99 USD
Free Shipping on orders $49 and up
BMW recommends a spark plug change interval of 37,000 miles for the S65 and S85 engines. Replace the spark plugs on your E9X M3 and E60 M5 and E63 M6 with these OEM NGK spark plugs that are a direct replacement for the factory part # 12120032273.
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