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

Bav Auto High-Performance Ignition Coil - N20 N52 N54 N55 S55 ...

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T#:578618

Part#: 5005

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$ 20.99 USD

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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 ...

For vehicles with production date up to 09/2002

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T#:579671

Part#: 5002

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$ 20.99 USD

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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

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T#:36337177

Part#: B50056KT

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$ 125.96 USD

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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

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T#:25042543

Part#: 12317501690

In Stock

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$ 169.59 USD

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Bav Auto Lower Timing Chain Sprocket - M50 M52 M52TU M54 S50 S52 ...

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T#:17871153

Part#: 11211719984

In Stock

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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

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T#:599825

Part#: 11311738700

In Stock

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$ 34.99 USD

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Bav Auto Ignition Coil - N20 N52 N55 N54 N62 S55

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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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Ferrea Performance Intake Valve - Stock Size

T#:583445

Part#: F1550P

Back Ordered

$ 34.99

This product was last offered at the strikethrough price on
11-04-2026

$ 31.99 USD

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$ 31.99 USD

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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

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

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T#:25042542

Part#: 12317831436

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This product was last offered at the strikethrough price on
11-07-2026

$ 167.24 USD

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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54

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T#:640207

Part#: 11617501566

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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

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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 ...

For vehicles with production date from 09/2002

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T#:638092

Part#: 11127512839

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$ 187.19 USD

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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.

Universal Valve Spring Compressor

T#:1809130

Part#: W89409

Ships in 1 Business Day

$ 126.99 USD

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For servicing overhead valve engine with cylinder head removed.

407 Piece O-Ring Assortment

T#:1809147

Part#: W5202

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$ 21.99 USD

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$ 21.99 USD

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Nitrile Butadiene Rubber

Ferrea Performance Exhaust Valve - Stock Size

T#:583444

Part#: F1552P

Ships on Nov 30, 2026

$ 34.99

This product was last offered at the strikethrough price on
11-04-2026

$ 31.99 USD

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

T#:2242226

Part#: W80533

Ships in 1 Business Day

$ 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 1 Business Day

$ 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

Morimoto Standalone Can-Bus Wiring Harness - H4 / 9003 - Priced Each ...

T#:54388428

Part#: H240

Ships in 4 Business Days

$ 21.99 USD

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$ 21.99 USD

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OMP Battery Cut Off Switch / Kill Switch

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

T#:2242222

Part#: W80572

Ships in 1 Business Day

$ 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

Oil Separator Hose - E46, Z4

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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.

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.

Timing Chain - Upper

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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

For vehicles with production date from 01/2000

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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

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T#:17871159

Part#: 11411401399

In Stock

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11-07-2026

$ 12.59 USD

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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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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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419 Piece Metric O-Ring Assortment Kit

T#:641935

Part#: WLMW5203

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$ 19.99 USD

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Many uses around the garage and home

6pc Hook & Pick Set

T#:1855974

Part#: W942

In Stock

$ 8.99 USD

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$ 8.99 USD

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Includes straight, angled and combination picks

Feeler Gauge Set

T#:1809138

Part#: W125C

Ships in 1 Business Day

$ 9.99 USD

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$ 9.99 USD

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Thickness Gauge (32 Blades)

Piston Ring Installer

T#:1809133

Part#: W80575

Ships in 1 Business Day

$ 17.62 USD

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$ 17.62 USD

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Comfortable vinyl grip handles.

Battery Tender Plus Advanced Battery Charging System

T#:49892371

Part#: BTT0210128

In Stock at Vendor

9% off MSRP $ 64.99

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

$ 58.99 USD

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9% off MSRP

$ 64.99

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

$ 58.99 USD

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120 pc Fuse Assortment

T#:1809154

Part#: W5368

Ships in 1-2 days

$ 13.68 USD

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$ 13.68 USD

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A must for any toolbox.

Black Forest Industries Engine Mounts - Stage 1 -/ Z3 / Z4 - BFI-BMW-...

T#:50934264

Part#: BFI-BMW-90-01

Ships on Dec 4, 2026

$ 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 / Z...

T#:50934269

Part#: BFI-BMW-TRANS-01

Ships on Dec 4, 2026

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

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