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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 INA Accessory Belt Tensioner Pulley - Water Pump/Alternator - BMW...

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T#:31059479

Part#: 11287838194KT

In Stock

$ 30.99 USD

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$ 30.99 USD

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If your water pump or alternator belt tensioner has failed because of the pulley or bearing, this replacement pulley is all you need to get your BMW back on the road! BMW and other brands usually sell the tensioner with the metal arm included, which increases the cost, even though the arm often doesn't need replacement. This OEM replacement is a much more affordable option, saving you $150 or more compared to the Genuine BMW tensioner.

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OEM INA Accesory Belt Tensioner Pulley - Air Conditioner - BMW E9X M3...

For clockwise power steering pump

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T#:31092500

Part#: 11287838196KT

Ships in 1-2 days

$ 25.99 USD

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$ 25.99 USD

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If your air conditioning belt tensioner has failed because of the pulley or bearing, this replacement pulley is all you need to get your BMW back on the road! BMW and other brands usually sell the tensioner with the metal arm included, which increases the cost, even though the arm often doesn't need replacement. This OEM replacement is a much more affordable option, saving you $180 or more compared to the Genuine BMW tensioner.

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Blue WG38 Gen V Ultra-Gate 38 - 14PSI

T#:22591972

Part#: TS-0551-1011

In Stock at Vendor

10% off MSRP $ 430.99

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

$ 387.99 USD

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10% off MSRP

$ 430.99

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

$ 387.99 USD

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The Gen V WG38 Ultra-Gate 38 external wastegate is your cost-effective, high-performance solution. This 38mm external wastegate is meticulously designed for hassle-free bolt-on applications that make use of the 2-bolt flange.

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Meyle Crankshaft Position Sensor - E31, E38, E39, E52, E60, E63, E64,...

5X Entries Into Our F80 M3 Sweepstakes
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T#:579358

Part#: 3148990000

Ships on Oct 29, 2026

$ 37.99 USD

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$ 37.99 USD

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Referred to as the speed sensor & reference sensor

OEM INA Idler Pulley - Multiple BMWs

For vehicles with a production date up to 04/2008

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T#:1626

Part#: 11287841228

In Stock

$ 18.99 USD

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$ 18.99 USD

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This is an OEM INA Upper Idler Pulley, also known as the roller pulley or deflection pulley. The upper and lower idler pulleys are known to be the primary sources for 'belt squealing'. The pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).

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Meyle Idler Pulley

For vehicles with a production date up to 04/2008

5X Entries Into Our F80 M3 Sweepstakes
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T#:369422

Part#: 11287841228

In Stock

Sale - Save 60% $ 32.63

This product was last offered at the strikethrough price on
05-02-2026

$ 13.00 USD

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Sale - Save 60%

$ 32.63

This product was last offered at the strikethrough price on
05-02-2026

$ 13.00 USD

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Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems

Meyle V-ribbed AC Belt - E9x - M3 - S65

5X Entries Into Our F80 M3 Sweepstakes

T#:55497380

Part#: 500061065

Ships on Oct 29, 2026

$ 6.99 USD

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$ 6.99 USD

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Meyle components are renowned for meeting or exceeding original equipment standards. This V-ribbed belt utilizes advanced synthetic rubber compounds designed to withstand high RPMs, extreme engine bay temperatures, and rigorous driving conditions.

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Meyle - Auxiliary Belt - E46, E90, E92, E93, Z3, Z4

5X Entries Into Our F80 M3 Sweepstakes

T#:40546016

Part#: 11287830945

Ships on Oct 29, 2026

$ 15.99 USD

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$ 15.99 USD

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A high-quality, OE-style replacement serpentine belt designed to deliver reliable power to critical engine components, ensuring optimal performance and durability.

Meyle Outdoor Temperature Sensor / Probe

5X Entries Into Our F80 M3 Sweepstakes
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T#:579266

Part#: 3009190001

Back Ordered

$ 44.99 USD

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$ 44.99 USD

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Common fix for incorrect OBC temperature readings

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