BMW Engine Parts for BMW 3 Series E46 (1999-2005)

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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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Bav Auto High-Performance Ignition Coil - N20 N52 N54 N55 S55
Bav Auto High-Performance Ignition Coil - N20 N52 N54 N55 S55 ...
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Bavarian Autosport - Corporate Logo
T#:578618
Part#: 5005
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A simple yet effective upgrade, these Bav Auto High-Performance Ignition Coils feature modified core windings that offer increased firepower and promote a faster, more efficient burn. The result is greater low-end torque and increased horsepower in the mid to top-end. When used in a properly functioning engine, a noticeable difference can be felt. In addition to better torque and horsepower, fuel economy is also improved! These coils come with new spark plug boots. 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.
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Bav Auto High-Performance Ignition Coil - M62 M73 M52 M54 S52 S62
Bav Auto High-Performance Ignition Coil - M62 M73 M52 M54 S52 S62 ...
For vehicles with production date up to 09/2002
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Bavarian Autosport - Corporate Logo
T#:579671
Part#: 5002
In Stock
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A simple yet effective upgrade, these Bav Auto High-Performance Ignition Coils feature modified core windings that offer increased firepower and promote a faster, more efficient burn. The result is greater low-end torque and increased horsepower in the mid to top-end. When used in a properly functioning engine, a noticeable difference can be felt. In addition to better torque and horsepower, fuel economy is also improved! These coils come with new spark plug boots. 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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High-Performance Ignition Coil - Set Of 6
High-Performance Ignition Coil - Set Of 6
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Earn 5% back in Turner Rewards on orders placed 10/28-10/31. Redeem 11/27-12/1. Terms & conditions apply
Earn 5% back in Turner Rewards on orders placed 10/28-10/31. Redeem 11/27-12/1. Terms & conditions apply
Bavarian Autosport - Corporate Logo
T#:36337177
Part#: B50056KT
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Enhance your BMW's performance with the upgraded BAV Ignition Coil, designed to boost firepower and optimize engine efficiency. These coils boast modified core windings for a faster, more efficient burn, resulting in increased torque at lower RPMs and heightened horsepower in the upper range. While improvements depend on your engine's condition, these coils ensure noticeable enhancements in performance and potential fuel economy benefits.

Product Benefits:

Improved engine firepower and efficiency
Increased torque at lower RPMs
Enhanced horsepower in higher ranges
Potential improvement in fuel economy
Set of six for complete BMW Cooper replacement

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New Alternator - 120A
New Alternator - 120A
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Bavarian Autosport - Corporate Logo
T#:25042543
Part#: 12317501690
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$ 169.59 USD
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Bav Auto Lower Timing Chain Sprocket - M50 M52 M52TU M54 S50 S52
Bav Auto Lower Timing Chain Sprocket - M50 M52 M52TU M54 S50 S52 ...
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Bavarian Autosport - Corporate Logo
T#:17871153
Part#: 11211719984
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$ 44.79 USD
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This lower timing chain sprocket is located behind the crank pulley, directly on the crankshaft.
Upper Timing Chain Tensioner
Upper Timing Chain Tensioner
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Bavarian Autosport - Corporate Logo
T#:599825
Part#: 11311738700
In Stock
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$ 34.99 USD
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$ 49.99

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Bav Auto Ignition Coil - N20 N52 N55 N54 N62 S55
Bav Auto Ignition Coil - N20 N52 N55 N54 N62 S55
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Bavarian Autosport - Corporate Logo
T#:578619
Part#: 12137571643A
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$ 26.59 USD
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Restores your engines smooth operation with new ignition coils from Bav Auto! Boot included with coil. Same as 12131712219, 12130148594, 12130390064, 12137594938, 12137551049, 12137562744, 12137571643, 12138647689, 12137594937, 12137571643. 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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Bav Auto Variable Engine Timing Solenoid Switch - BMW E39 E46 E53 E83 E85
Bav Auto Variable Engine Timing Solenoid Switch - BMW E39 E46 E53 E83...
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Requires use of open-ended wrench for installation - does not fit BMW specific socket tool
Bavarian Autosport - Corporate Logo
T#:599824
Part#: 11361432532
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$ 65.79 USD
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This solenoid works with the VANOS engine timing system to improve horsepower and torque throughout the RPM range. 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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Alternator - 120amp
Alternator - 120amp
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Bavarian Autosport - Corporate Logo
T#:25042542
Part#: 12317831436
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$ 167.24 USD
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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54
Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54
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Bavarian Autosport - Corporate Logo
T#:640207
Part#: 11617501566
In Stock
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$ 23.09 USD
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BMW has an ongoing issue with oil separators freezing in cold weather if driving is done before the vehicle is fully warmed up. There is often a howling noise followed by numerous oil leaks. The crankcase breather valve is used to purge the oil vapor from the engine block into the valve cover. However, sometimes condensation can cause it to freeze, causing the entire oil separator system to fail, crack, and disintegrate. Replace this and all the other components of the oil separator system to prevent damage to all the aspects of your engine. As long as you have everything off, you can rest assured that new parts will last and be reliable. 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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Bavarian Autosport M52/M54/S52 Exact-Fit Rubber Vanos Line
Bavarian Autosport M52/M54/S52 Exact-Fit Rubber Vanos Line
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Bavarian Autosport - Corporate Logo
T#:1105923
Part#: 000932LA01-02
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$ 62.69 USD
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We have seen so many M52/M54/S52 Vanos line failures at the track that we have to offer you a solution. The factory line is prone to failure due to the OEM hard-line - this rubber line alleviates the issues imposed by the factory design and enables you to worry less about your Vanos system. We trust ECS Tuning's Exact-Fit Stainless Steel lines for several different applications, and their M52/M54/S52 Vanos line is no exception. Bavarian Autosport's M52/M54/S52 Exact-Fit Rubber Vanos Line offers several benefits over OEM. Not is it they more durable and reliable OEM, but it is also easier to install, and significantly less expensive than the factory BMW Vanos line (11361705532) or other alternatives available on the market. If you're factory Vanos line hasn't failed yet, we still recommend replacing yours with Bavarian Autorsport's Exact Fit Rubber Vanos Line M52/M54/S52 to avoid eminent future failure.
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Bavarian Autosport Valve Cover Assembly - BMW M54 2.5L and 3.0L
Bavarian Autosport Valve Cover Assembly - BMW M54 2.5L and 3.0L ...
For vehicles with production date from 09/2002
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Bavarian Autosport - Corporate Logo
T#:638092
Part#: 11127512839
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Direct replacement for cracked, leaky, warped, or otherwise failing plastic valve covers. Fits a variety of vehicles, including E39, E46, E53, E60, E83, and Z4 chassis' equipped with the M54 engine.
Morimoto Standalone Can-Bus Wiring Harness - H4 / 9003 - Priced Each
Morimoto Standalone Can-Bus Wiring Harness - H4 / 9003 - Priced Each ...
Morimoto - Corporate Logo
T#:54388428
Part#: H240
Ships in 4 Business Days
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$ 21.99 USD
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$ 21.99 USD
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OMP Battery Cut Off Switch / Kill Switch
OMP Battery Cut Off Switch / Kill Switch
OMP - Corporate Logo
T#:1614
Part#: EA-462
Back Ordered
$ 65.00 USD
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$ 65.00 USD
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OMP Battery Cut Off Switch / Kill Switch, for use in racecars as an emergency "kill switch", to depower the electrical system in the event of a crash or other emergency. This cut off switch is FIA approved, has 6 poles and alternator protection, as well as a removable key.
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Oil Separator Hose - E46, Z4
Oil Separator Hose - E46, Z4
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Bavarian Autosport - Corporate Logo
T#:579880
Part#: 55080
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$ 17.49 USD
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Cold climate version for extra insulation! Fits all E46 and Z4 chassis equipped with an M54 engine.
Timing Chain - Upper
Timing Chain - Upper
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Bavarian Autosport - Corporate Logo
T#:17871154
Part#: 11311432177
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$ 19.59 USD
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Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3
Bav Auto Crankcase Ventilation Return Hose - E46 E39 E60 Z3
For vehicles with production date from 01/2000
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Bavarian Autosport - Corporate Logo
T#:638072
Part#: 11617504536
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$ 18.89 USD
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This is the BMW crankcase return line that goes from the intake manifold to the top CCV connecting hose. 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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Oil Pump Chain
Oil Pump Chain
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Bavarian Autosport - Corporate Logo
T#:17871159
Part#: 11411401399
In Stock
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$ 12.59 USD
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Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M52TU
Bav Auto Upper Oil Separator Vent Tube - E36 E46 E60 E84 Z3 Z4 M54 M5...
For vehicles with production date from 01/2000
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Bavarian Autosport - Corporate Logo
T#:640502
Part#: 11617504535
In Stock
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$ 17.49 USD
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Runs from the top of the oil separator up to rear of the intake manifold. 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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Black Forest Industries Engine Mounts - Stage 1 -/ Z3 / Z4 - BFI-BMW-90-01 - E30, E36, E46
Black Forest Industries Engine Mounts - Stage 1 -/ Z3 / Z4 - BFI-BMW-...
Black Forest Industries - Corporate Logo
T#:50934264
Part#: BFI-BMW-90-01
Ships on Dec 4, 2026
$ 199.99 USD
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$ 199.99 USD
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Eliminate the "drive-line slop" common in the E36 and E46 chassis with this Stage 1 Engine Mount kit.
Black Forest Industries Transmission Mounts - Stage 1 -/ E9X / Z3 / Z4 - BFI-BMW-Trans-01 - E30, E36, E46, E9x
Black Forest Industries Transmission Mounts - Stage 1 -/ E9X / Z3 / Z...
Black Forest Industries - Corporate Logo
T#:50934269
Part#: BFI-BMW-TRANS-01
Ships on Dec 4, 2026
$ 69.99 USD
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$ 69.99 USD
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This kit is a "must-have" for any E36, E46, or E9X owner looking to tighten up their drivetrain's foundation and ensure long-term mechanical reliability.

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