BMW Engine Parts for BMW E90 M3 S65 4.0L

Aluminum Valve Cover Set - E9X M3 S65 4.0L

10X Entries Into Our F80 M3 Sweepstakes

T#:39835971

Part#: 11127848154KT

In Stock

Sale - Save 20% $ 907.99

This product was last offered at the strikethrough price on
05-03-2026

$ 726.38 USD

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Sale - Save 20%

$ 907.99

This product was last offered at the strikethrough price on
05-03-2026

$ 726.38 USD

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The factory magnesium valve covers on the S65 engine are known for developing micro-porosity, corrosion, and persistent oil leaks over time. This material is highly susceptible to oxidation, leading to unsightly surface imperfections, weakened gasket channels, and sealing issues that a simple gasket replacement won't fix.

Upgrade to this high-strength aluminum valve cover set, engineered as a direct-fit replacement for your aging OEM covers. Unlike magnesium, aircraft-grade aluminum offers superior durability, enhanced heat resistance, and complete immunity to the corrosion issues that plague factory covers. Whether you're refreshing a high-mileage M3 or seeking long-term reliability, this upgrade ensures a leak-free, worry-free solution for your S65.

Features:

Eliminates the common porosity and corrosion issues found in factory magnesium covers.

Helps maintain optimal engine temperatures and enhances long-term reliability.

Designed for an OEM-like installation without modifications.

Reduces the risk of oil leaks, ensuring a proper seal.

Resistant to oxidation and chemical exposure for a long-lasting clean look.

Replaces OEM Part Numbers: 11127848153 & 11127848154

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Alternator - 180amp

10X Entries Into Our F80 M3 Sweepstakes

T#:26438185

Part#: 12317837981

In Stock

Sale - Save 15% $ 304.99

This product was last offered at the strikethrough price on
05-03-2026

$ 259.24 USD

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Sale - Save 15%

$ 304.99

This product was last offered at the strikethrough price on
05-03-2026

$ 259.24 USD

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Bav Auto Low Fuel Pressure Sensor - Multiple BMWs

10X Entries Into Our F80 M3 Sweepstakes

T#:639834

Part#: 13537614317

In Stock

Sale - Save 20% $ 52.99

This product was last offered at the strikethrough price on
05-03-2026

$ 42.39 USD

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Sale - Save 20%

$ 52.99

This product was last offered at the strikethrough price on
05-03-2026

$ 42.39 USD

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This low-pressure fuel sensor is commonly a cause of an "Increased Emissions" warning on the idrive and for check engine (SES) lights on BMW's with the N54 6 cylinder turbo engine or the S65 V8 engine in the M3. It will also fit a limited number of cars with the N55 engine. This sensor can be traced to a number of drivability issues, including cold start running problems, misfires, stumbling, hesitations, and overall rough running. You will likely have a code for the misfires, rich condition, or for the sensor itself. In some cases, the combination of codes can bring about a limp mode. Replacing this sensor is an easy and inexpensive first step if you're having any of these issues. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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407 Piece O-Ring Assortment

T#:1809147

Part#: W5202

In Stock at Vendor

$ 21.99 USD

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$ 21.99 USD

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Nitrile Butadiene Rubber

Bav Auto Intake Air Temperature Sensor - BMW E9X M3 S65

10X Entries Into Our F80 M3 Sweepstakes

T#:639824

Part#: 13627792203

Ships on Jan 12, 2027

$ 24.99 USD

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$ 24.99 USD

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This sensor provides your BMW's control unit with intake temperature readings in order to run optimally in any condition. If this sensor has failed, your BMW may be suffering from more performance loss than you realize. Replace your IAT sensor to ensure proper temperature readings and restore lost performance! From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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3/8" Dr. 5/8" Extended Spark Plug Socket

T#:2242226

Part#: W80533

Ships in 2 Business Days

$ 20.25 USD

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$ 20.25 USD

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Extended socket length reaches confined areas.

Piston Ring Comp 3-1/2" to 7"

T#:2242223

Part#: W80573

Ships in 2 Business Days

$ 22.99 USD

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$ 22.99 USD

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Use to install pistons on most passenger cars and truck engines

Piston Ring Comp 2-1/8" to 5"

T#:2242222

Part#: W80572

Ships in 2 Business Days

$ 21.99 USD

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$ 21.99 USD

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Use to install pistons on most passenger cars and truck engines

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

5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

T#:579358

Part#: 3148990000

Ships on Nov 4, 2026

$ 37.99 USD

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$ 37.99 USD

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Referred to as the speed sensor & reference sensor

Bav Auto Crankshaft Position Sensor - Multiple BMWs

10X Entries Into Our F80 M3 Sweepstakes

T#:639826

Part#: 13627525015

Special Order: No Guaranteed ETA

$ 67.99 USD

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$ 67.99 USD

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This crankshaft position sensor provides the ECU with the engine speed signal. It is mounted in either the engine block or the bell housing of the transmission on most cars. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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6pc Hook & Pick Set

T#:1855974

Part#: W942

Ships on Dec 15, 2026

$ 8.99 USD

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$ 8.99 USD

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Includes straight, angled and combination picks

419 Piece Metric O-Ring Assortment Kit

T#:641935

Part#: WLMW5203

Ships in 2 Business Days

$ 19.99 USD

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$ 19.99 USD

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Many uses around the garage and home

Spark Plug Gap Gauge

T#:1855998

Part#: W80535

Ships in 3 Business Days

$ 1.99

This product was last offered at the strikethrough price on
08-26-2026

$ 1.54 USD

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$ 1.54 USD

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Easy to read markings to set gaps quickly and easily.

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

120 pc Fuse Assortment

T#:1809154

Part#: W5368

In Stock

$ 13.68 USD

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$ 13.68 USD

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A must for any toolbox.

Piston Ring Installer

T#:1809133

Part#: W80575

Ships in 2 Business Days

$ 17.62 USD

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$ 17.62 USD

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Comfortable vinyl grip handles.

Active Autowerke - S65 Power Pulley DPK Belt Kit - E9X M3

For vehicles with production date from 6/2008

T#:50934275

Part#: 13-001D

Ships in 4 Business Days

$ 75.00 USD

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$ 75.00 USD

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Free Up Real S65 Power — Engineered the Turner Way Your S65 is already making the power. This kit simply lets you keep more of it. The Active Autowerke Power Pulley Kit for the BMW E9X M3 reduces parasitic drag at the crankshaft, trimming rotational mass and freeing up horsepower that would otherwise be consumed by accessory drive load. The result is a measurable increase in rear-wheel output without sacrificing the balance, cooling capacity, or long-term durability expected from a properly engineered BMW upgrade. The crank pulley is CNC-machined from billet 6061 aluminum and finished with a hard-coat anodize for durability under sustained high-RPM operation. Unlike undersized pulleys that compromise system function, this design maintains proper operating characteristics while delivering real-world gains. Late-2007 production E9X M3 models transitioned to a double-sided (DPK) A/C belt configuration. Rather than forcing a workaround, Active Autowerke developed a proper DPK-compatible solution — including the correct matched belt. Applicable kits also include a spare DPK belt for added insurance. Dyno testing on a Mustang chassis dyno confirms gains of 10–12+ rear-wheel horsepower on an otherwise stock vehicle. Installation is fully reversible and requires no permanent modification. Product Highlights 10–12+ RWHP gain verified on stock S65 engines Complete bolt-on system CNC-machined 6061 billet aluminum crank pulley Hard-coat anodized finish for durability Includes correct replacement drive and A/C belts Spare DPK belt included where applicable Compatible with manual and DCT-equipped E9X M3 Reduces parasitic drag and rotational mass Designed to maintain proper operating temperatures Works in conjunction with Active Autowerke performance software Available for single-sided and double-sided (DPK) belt configurations Fitment Information Confirm whether your E9X M3 is equipped with a single-sided or double-sided (DPK) A/C belt prior to ordering to ensure correct application. A properly engineered solution for enthusiasts who want measurable gains while preserving OEM-level refinement and reliability.

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

5X Entries Into Our F80 M3 Sweepstakes

T#:55497380

Part#: 500061065

Ships on Nov 4, 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 Nov 4, 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
We Price Match - Give Us A Call or Chat!

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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BMW Engine Parts for BMW E90 M3 S65 4.0L

Sub-Categories

Aluminum Valve Cover Set - E9X M3 S65 4.0L

Alternator - 180amp

Bav Auto Low Fuel Pressure Sensor - Multiple BMWs

407 Piece O-Ring Assortment

Bav Auto Intake Air Temperature Sensor - BMW E9X M3 S65

3/8" Dr. 5/8" Extended Spark Plug Socket

Piston Ring Comp 3-1/2" to 7"

Piston Ring Comp 2-1/8" to 5"

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

Bav Auto Crankshaft Position Sensor - Multiple BMWs

6pc Hook & Pick Set

419 Piece Metric O-Ring Assortment Kit

Spark Plug Gap Gauge

Meyle Idler Pulley

120 pc Fuse Assortment

Piston Ring Installer

Active Autowerke - S65 Power Pulley DPK Belt Kit - E9X M3

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

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

Meyle Outdoor Temperature Sensor / Probe

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