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 ...
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Bavarian Autosport - Corporate Logo
T#:578618
Part#: 5005
In Stock
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This product was last offered at the strikethrough price on
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$ 20.99 USD
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$ 29.99

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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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Bavarian Autosport - Corporate Logo
T#:579671
Part#: 5002
In Stock
Sale - Save 30% $ 29.99

This product was last offered at the strikethrough price on
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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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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
In Stock
Sale - Save 30% $ 179.99

This product was last offered at the strikethrough price on
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$ 125.96 USD
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$ 179.99

This product was last offered at the strikethrough price on
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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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Bavarian Autosport - Corporate Logo
T#:25042543
Part#: 12317501690
In Stock
Sale - Save 20% $ 211.99

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

$ 169.59 USD
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$ 211.99

This product was last offered at the strikethrough price on
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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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Bavarian Autosport - Corporate Logo
T#:17871153
Part#: 11211719984
In Stock
Sale - Save 30% $ 63.99

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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.
Glyco - Corporate Logo
T#:375825
Part#: 11241284849
Ships in 2 Business Days
$ 92.02

This product was last offered at the strikethrough price on
07-15-2026

$ 84.66 USD
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$ 84.66 USD
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Standard bore - 45mm

Upper Timing Chain Tensioner
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Bavarian Autosport - Corporate Logo
T#:599825
Part#: 11311738700
In Stock
Sale - Save 30% $ 49.99

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$ 34.99 USD
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$ 49.99

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I70BT Next Generation Diagnostic Tablet - NEW
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Schwaben by Foxwell - Corporate Logo
T#:23284044
Part#: I70BTFOX
In Stock
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$ 359.99 USD
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$ 479.99

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$ 359.99 USD
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The Foxwell i70BT is your solution for a tablet diagnostic scanner that will elevate your level of diagnostics without breaking the bank.  This unit is one step above the standard i70, and we'll explain why below.  This heavy-duty tablet can withstand any work you put it through and will find its place in any garage and/or shop.  The i70 is unlocked with almost any manufacturer you will interact with and is pre-loaded to be compatible up to years 2019/2020 - plus 3 years of free updates to stay relevant for years to come. With dozens of features, 35 additional maintenance functions, and backed by our LIFETIME REPLACEMENT program, this scan tool will get the job done right, every time.

i70BT vs i70:

  • *NEW* Fox Link I: i70BT can wireless connect to your vehicle AND supports CAN/FD protocol
  • *NEW* Bi-directional control on i70BT
  • i70BT is more up-to date off the bat (vehicles 2020/2021, and still including 3 years of free software updates to stay up-to-date)

Why the i70BT?

First, the Hardware:

  • Display: 7" color LCD Screen that is daylight-readable
  • Memory: 1 GB DDR3L
  • Storage: 32 GB SSD
  • Connection: Wireless VCI
  • Battery: 4000 mAh

What Are Its Standard Features?

  • *NEW* Wireless Connection with Foxlink I.
  • *NEW* Supports CAN/FD protocol.
  • *NEW* Bi-directional control.
  • Loaded with the latest models on most cars 2020/2021 and with 3 years of free software updates.
  • Compatible with latest models, including cars, SUV's, Minivans, and light duty trucks.
  • Gets access to power-train, chassis, and body systems.
  • Identifies vehicle quickly and easily with automatic VIN reading.
  • Auto Scan function scans vehicle in just a few seconds.
  • Reads and clears diagnostic trouble codes.
  • Supports the most commonly required service features like brake deactivation, service resets and transmission adaptations.
  • Supports ABS bleeding and IMMO functionalities
  • Runs on latest Android operating system.
  • Screen is usable with gloves.
  • FRM testing for BMW/MINI.
  • Audi maintenance mode.

How about the Coding and Graphing?

  • Views live vehicle sensors data in a text, graph and gauge formats and allows you to focus on any suspicious data.
  • Merges multiple interactive sensor graphs, providing you with the most comprehensive and functional look at live data.
  • Live data self-learning and alarms when data is over range.
  • Records and plays back live data logs to catch intermittent faults.
  • For coding features, check out the i70Pro (ES#3698691)!

What Else Makes It Stand Out?

  • One touch update via Wi-Fi lets you always have the latest bug fixes, new vehicles, and functionality at your fingertips.
  • Unique debug logging feature allows for quicker and more accurate fixes for diagnostic troubles and bugs.
  • Instant support available from Foxwell's technical team by TeamViewer remote control

Kit Includes:

  • i70BT Main Unit
  • VCI Dongle
  • USB-C Cable 
  • USB Charging Adapter
  • Quick Start Guide
  • Warranty Card 
  • User Manual


For more information about this tool, visit: https://www.foxwelltech.us/product-detail-737.html

For further information past this, please contact Foxwell sales team at: [email protected]

For technical support, please contact: https://www.foxwelltech.com/support/ticket/

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Bav Auto Ignition Coil - N20 N52 N55 N54 N62 S55
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
Bavarian Autosport - Corporate Logo
T#:578619
Part#: 12137571643A
In Stock
Sale - Save 30% $ 37.99

This product was last offered at the strikethrough price on
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$ 26.59 USD
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$ 37.99

This product was last offered at the strikethrough price on
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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...
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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
In Stock
Sale - Save 30% $ 93.99

This product was last offered at the strikethrough price on
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$ 65.79 USD
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$ 93.99

This product was last offered at the strikethrough price on
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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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Bavarian Autosport - Corporate Logo
T#:25042542
Part#: 12317831436
In Stock
Sale - Save 25% $ 222.99

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

$ 167.24 USD
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Sale - Save 25%
$ 222.99

This product was last offered at the strikethrough price on
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$ 167.24 USD
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Bav Auto Crankcase Pressure Regulator Valve - BMW M52 M54
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Bavarian Autosport - Corporate Logo
T#:640207
Part#: 11617501566
In Stock
Sale - Save 30% $ 32.99

This product was last offered at the strikethrough price on
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$ 23.09 USD
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$ 32.99

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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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Glyco - Corporate Logo
T#:375823
Part#: 11211706847
Ships in 2 Business Days
$ 136.06

This product was last offered at the strikethrough price on
07-15-2026

$ 125.73 USD
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$ 125.73 USD
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Standard bore
Bavarian Autosport M52/M54/S52 Exact-Fit Rubber Vanos Line
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Bavarian Autosport - Corporate Logo
T#:1105923
Part#: 000932LA01-02
In Stock
Sale - Save 5% $ 65.99

This product was last offered at the strikethrough price on
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$ 62.69 USD
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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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Bavarian Autosport - Corporate Logo
T#:638092
Part#: 11127512839
In Stock
Sale - Save 26% $ 252.99

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$ 187.19 USD
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$ 252.99

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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.

Atlantic Automotive Engineering - Corporate Logo
T#:45757458
Part#: 32427830838
Back Ordered
$ 50.99

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$ 44.99 USD
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$ 50.99

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$ 44.99 USD
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A new power steering pulley is key to keeping your steering system smooth and reliable. Over time, pulleys can warp, crack, or wear, causing belt slippage, whining noises, or even pump failure. Installing a fresh pulley restores correct belt alignment, eliminates noise, and maintains consistent hydraulic pressure for precise, effortless steering. Why choose a new pulley? Smooth operation – Ensures proper belt tension for dependable pump performance. Noise reduction – Eliminates squealing, whining, or vibration from worn pulleys. System protection – Protects the pump and steering components from damage. Install a new pulley and keep your steering system running quietly, efficiently, and confidently.
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Autel - Corporate Logo
T#:2914116
Part#: AL329
Ships in 2 Business Days
$ 49.99 USD
Free Shipping on orders $49 and up
OBDII Code Reader
Glyco - Corporate Logo
T#:375824
Part#: 11211706850
In Stock at Vendor
$ 126.61

This product was last offered at the strikethrough price on
07-15-2026

$ 119.33 USD
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$ 119.33 USD
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59.75MM(+0.25) bore

Hitachi - Corporate Logo
T#:48850072
Part#: 12147539165
In Stock
$ 41.99 USD
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$ 41.99 USD
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A bad cam sensor can cause a variety of problems from hard starting to stalling at low speeds. Cam sensor replacement has been known to cure many drivabilty issues. Uses O-ring # 12 141 748 398 (not included)
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Glyco - Corporate Logo
T#:374671
Part#: 11211706848
Ships in 1-2 days
$ 194.32 USD
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$ 194.32 USD
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Standard bore

Oil Separator Hose - E46, Z4
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Bavarian Autosport - Corporate Logo
T#:579880
Part#: 55080
In Stock
Sale - Save 30% $ 24.99

This product was last offered at the strikethrough price on
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$ 17.49 USD
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$ 24.99

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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
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Bavarian Autosport - Corporate Logo
T#:17871154
Part#: 11311432177
In Stock
Sale - Save 30% $ 27.99

This product was last offered at the strikethrough price on
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$ 19.59 USD
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$ 27.99

This product was last offered at the strikethrough price on
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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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Bavarian Autosport - Corporate Logo
T#:638072
Part#: 11617504536
In Stock
Sale - Save 30% $ 26.99

This product was last offered at the strikethrough price on
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$ 18.89 USD
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$ 26.99

This product was last offered at the strikethrough price on
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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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Bavarian Autosport - Corporate Logo
T#:17871159
Part#: 11411401399
In Stock
Sale - Save 30% $ 17.99

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

$ 12.59 USD
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Sale - Save 30%
$ 17.99

This product was last offered at the strikethrough price on
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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 M5...
For vehicles with production date from 01/2000
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Bavarian Autosport - Corporate Logo
T#:640502
Part#: 11617504535
In Stock
Sale - Save 30% $ 24.99

This product was last offered at the strikethrough price on
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$ 17.49 USD
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Sale - Save 30%
$ 24.99

This product was last offered at the strikethrough price on
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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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Glyco - Corporate Logo
T#:374292
Part#: 11241278209
Ships in 2 Business Days
$ 6.11 USD
Free Shipping on orders $49 and up
Press fit into small journal of connecting rod
Hitachi - Corporate Logo
T#:48850055
Part#: 12147518628
Ships in 3 Business Days
$ 71.99 USD
Free Shipping on orders $49 and up
The camshaft position sensor is essential for assisting the engine DME by monitoring the camshaft's position. The data from this sensor is key to optimizing ignition timing and ensuring smooth engine performance. Often referred to as the CMP sensor, this component is crucial for the overall functionality of the powertrain. A failing camshaft position sensor can cause a range of issues, including engine stumbling, hesitation during acceleration, power loss, and even starting difficulties or complete failure to start.
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Autel - Corporate Logo
T#:2914136
Part#: MSULTRA
Ships in 7 Business Days
$ 12,306.99 USD
Free Shipping on orders $49 and up
The MaxiSys Ultra is Autel’s most ambitious diagnostics tablet designed to maximize technician intelligence.

Hitachi - Corporate Logo
T#:48815451
Part#: 12131712219
Ships in 7 Business Days
$ 57.99 USD
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$ 57.99 USD
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Get your spark back with new ignition coils.
Hitachi - Corporate Logo
T#:48850063
Part#: 12138657273
Ships in 7 Business Days
$ 53.99 USD
Free Shipping on orders $49 and up
Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil the spark plug is not burning the air/fuel mixture properly and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code, but not always a check engine light. A misfire code may be related to an ignition coil, but could be from other things as well. ometimes, a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares.
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Hitachi - Corporate Logo
T#:48815470
Part#: 12141709616
Back Ordered
$ 32.99 USD
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NOTE: Does not include o-ring seal - see BMW # 12141748398 This is the crankshaft position sensor. It provides information for the ECU. A faulty sensor can cause issues with timing adjustment and limit performance and vehicle operation. Replace your sensor with a high-quality Hitachi sensor to restore peak performance.
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Glyco - Corporate Logo
T#:374670
Part#: 11211706849
Back Ordered
$ 172.99 USD
Free Shipping
$ 172.99 USD
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Standard bore

Glyco - Corporate Logo
T#:374672
Part#: 11211706852
Back Ordered
$ 108.99 USD
Free Shipping
$ 108.99 USD
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59.75MM(+0.25) bore