BMW Intake Parts for BMW E46 M3 S54 (1999-2005)

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One thing drivers and cars have in common is the need for air. Induction systems provide a third of the critical necessities for engines to run, so giving your BMW the best way to breathe is paramount in engine performance. If you need to replace your filter, recharge your reusable pod filter, or upgrade your intake, turbos, or intercooler parts, everything can be found below. We have OEM replacements as well as aftermarket performance upgrades to keep your BMW pristine, powerful, and functioning at peak efficiency.

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BMW E46 Crankcase Pressure Regulator Valve | S54 3.2L Engine ...
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T#:39059262
Part#: 11157840446
In Stock
$ 40.99 USD
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BMW E46 Crankcase Pressure Regulator Valve | S54 3.2L Engine is a crucial component that ensures proper crankcase ventilation by regulating oil vapor flow into the intake manifold, preventing excessive oil consumption and buildup. Designed specifically for BMW E46 models with the S54 3.2L engine, this valve helps maintain engine efficiency and performance. BMW engines are known to experience oil separator freezing in cold weather if not fully warmed up, which can lead to howling noises and oil leaks. To ensure a thorough repair, replacing the valve cover gasket when changing the separator is highly recommended.

  • Regulates crankcase pressure to prevent excessive oil consumption
  • Helps maintain proper engine ventilation for peak performance
  • Reduces the risk of oil separator freezing and associated leaks
  • Direct-fit replacement for BMW E46 models with S54 3.2L engine
  • High-quality materials ensure durability and long-lasting performance
  • Recommended to replace the valve cover gasket for a complete repair

Protect your BMW's engine from excessive oil consumption and leaks by replacing a failing crankcase pressure regulator valve with this premium-quality replacement.

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Rein Silicone Vacuum Hoses - Blue - 5 Meters (3.5mm ID)
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T#:379090
Part#: 11731259996-5
In Stock
$ 38.99

This product was last offered at the strikethrough price on
03-17-2026

$ 33.99 USD
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$ 33.99 USD
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This silicone hose has an inner diameter of 3.5mm and outer diameter of 7.5mm, is blue in color, and arrives in a 5 Meter section that can be cut down to size.
Rein Cloth Braided Fuel/Vacuum Hose - Black - 5 Meter
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T#:378470
Part#: N203531-5
In Stock
$ 80.05

This product was last offered at the strikethrough price on
06-09-2026

$ 62.99 USD
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$ 62.99 USD
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Replace your cracked or frayed fuel or vacuum lines. 3.5mm ID

Karbonius E46 M3 CSL (S54) Carbon Airbox - Gloss Finish
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Karbonius Composites - Corporate Logo
T#:35019964
Part#: E46AD02-CF-2
Ships on Aug 11, 2026
$ 2,349.00 USD
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$ 2,349.00 USD
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The ultimate intake for the E46 M3, made from prepeg carbon fiber in the same weave as the Genuine airbox for a OE look. The Karbonius airbox also features carbon fiber intake trumpets in place of the factory's plastic trumps, and are finished to a ultra smooth finish for perfect airflow.

OPTIONAL ESS E46 M3 Alpha-N E-Flash ECU Tuning Software

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Karbonius CSL Carbon Snorkel - E46 M3 (S54) - Gloss
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Karbonius Composites - Corporate Logo
T#:29931698
Part#: E46AD04-CF-2
Ships in 9 Business Days
$ 779.00 USD
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$ 779.00 USD
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Snorkel extension the allows ducting from CSL bumper to airbox, requires use of CSL style airbox and mounts like the factory flap unit.
Rein Silicone Vacuum Hoses - Black - 5 Meters (3.5mm ID)
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Rein - Corporate Logo
T#:51848535
Part#: 51731257971-5M
In Stock
New Item
$ 38.66 USD
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This silicone hose has an inner diameter of 3.5mm and outer diameter of 7.5mm, is black in color, and arrives in a 5 Meter section that can be cut down to size.

Karbonius E46 M3 CSL (S54) Carbon Snorkel - Matte Finish
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Karbonius Composites - Corporate Logo
T#:35727834
Part#: E46AD04-CFM-2
Ships in 3 Business Days
$ 809.00 USD
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$ 809.00 USD
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Karbonius E46 M3 CSL (S54) Carbon Snorkel - 2x2 Weave and Matte Finish

Karbonius E46 M3 CSL (S54) Carbon Snorkel - 2x2 Weave and Matte Finish is the ultimate performance and style upgrade for BMW E46 M3 enthusiasts. This high-quality carbon fiber snorkel is designed to replicate the renowned CSL design, enhancing airflow efficiency and engine performance while providing a sleek, race-inspired aesthetic. Made with a premium 2x2 carbon fiber weave and finished with a durable matte coating, it offers the perfect balance of form and function. Available through Turner Motorsport, this component ensures authenticity and precision engineering for the discerning BMW owner.

Key Benefits

  • Precision-crafted for seamless fitment on BMW E46 M3 models
  • Improves airflow for optimized S54 engine performance
  • Constructed with a 2x2 carbon fiber weave for superior strength and lightweight durability
  • Matte finish adds a modern, sporty aesthetic to the engine bay
  • Inspired by the legendary CSL design for an authentic motorsport upgrade
  • Available exclusively from trusted BMW performance specialists, Turner Motorsport

Elevate your E46 M3’s performance and style with the Karbonius E46 M3 CSL (S54) Carbon Snorkel - 2x2 Weave and Matte Finish, a must-have for enthusiasts aiming to achieve the ultimate driving experience.

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CSL Air Box Race - S54
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Karbonius Composites - Corporate Logo
T#:7164824
Part#: E46AD03
Ships in 3 Business Days
$ 2,249.00 USD
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$ 2,249.00 USD
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Intake system made 100% in prepreg carbon fiber in autoclave

Karbonius E46 M3 CSL (S54) Carbon Airbox - Matte Finish
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Karbonius Composites - Corporate Logo
T#:39329313
Part#: E46AD02-CFM-2
Ships in 3 Business Days
$ 2,449.00 USD
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$ 2,449.00 USD
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The intake generates what is probably one of the best noises of any sports car. The Karbonius CSL Style Airbox weighs in at a scant 1.7kg. It is made with 100% prepreg carbon fiber and baked at 125º in an autoclave at their facility in Spain under ISO 9001 Management Quality System rules by qualified staff.
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Rein Silicone Vacuum Hoses - Blue - 3 Feet
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T#:378472
Part#: 11731259996-1
In Stock
$ 6.11 USD
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Replace your cracked or frayed vacuum lines. 3.5mm
Rein Cloth Braided Fuel/Vacuum Hose - Black - 1 Meter
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Rein - Corporate Logo
T#:363139
Part#: N203531-1
In Stock
$ 12.99 USD
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Replace your cracked or frayed fuel or vacuum lines. 3.5mm ID
Rein Cloth Braided Fuel/Vacuum Hose - Black - 20 Meter
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Rein - Corporate Logo
T#:378471
Part#: N203531-20
Ships in 3 Business Days
$ 363.52 USD
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$ 363.52 USD
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Replace your cracked or frayed fuel or vacuum lines. 3.5mm ID


Rein Silicone Vaccum Hose - Black - 65 Feet
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T#:378475
Part#: 5173125797120BLK
Ships in 3 Business Days
$ 175.99 USD
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$ 175.99 USD
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Replace your cracked or frayed vacuum lines. 3.5mm
Carbon Fiber OEM-Style Intake Manifold - E46 M3
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Karbonius Composites - Corporate Logo
T#:37521034
Part#: E46AD09-CF-2
Ships in 3 Business Days
$ 1,699.00 USD
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$ 1,699.00 USD
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The CSL Airbox is one of the most demanded improvements among BMW M3 E46 enthusiasts. That is both for performance gain and for the sound it brings to the car. On the other hand, it is a laborious, time-consuming, and expensive modification. For those who are looking for a similar sound to the CSL airbox but are not looking for HP gain, we have developed the Karbonius OEM Style S54 airbox. It is a simplified version of the CSL airbox, that, apart from a louder sound from the engine (+12 dB compared to plastic OEM), gives an awesome appearance and allows for easy installation using the stock elbow and MAF sensor. No need to remap! Regarding power increase, we got +4HP in a recent dyno test compared with the OEM airbox. Not really significant considering that dynos can have a 2% margin error. In conclusion, and pending new tests in the future, we can say no significant power increase and no HP loss. NOTES: Need to install with CSL Crankcase breather hose -- BMW # 11157833649) In SMG version, need to install a Genuine BMW CSL SMG Expansion Tank -- BMW # 21532282549 Fitment: BMW M3 E46 BMW Z4 M
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BMS Billet Water/Methanol Injection Tank Cap With Safety Check Valve ...
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Burger Motorsports - Corporate Logo
T#:20815185
Part#: BMSWMITC
In Stock
$ 59.00 USD
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The Burger Motorsports custom billet Water/Methanol Injection (WMI) cap includes an integrated heavy-duty check valve to let much-needed air in and prevent dangerous WMI vapor/fumes and liquid from getting out! Each cap is CNC machined in the USA from a solid block of billet aluminum, engraved with the BMS logo, and anodized blue for protection. Check valve piston must be lightly lubricated if tank shows signs of vacuum. One drop of penetrating oil or motor oil in the top will keep the check valve operational. Features and Benefits Integrated heavy-duty check valve lets air in but not out Specifically designed to prevent evaporation Keeps vapors inside the tank Made from a solid block of billet aluminum Blue anodizing for corrosion protection Exaggerated grips for easy removal Integrated heavy-duty o-ring Made in the USA
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1 Gallon Methanol Tank - Clear/White
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Burger Motorsports - Corporate Logo
T#:558165
Part#: 1G-MT-CL
Ships in 3 Business Days
$ 30.00 USD
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The least expensive option available from BMS, this 1 gallon tank is compact and flexible allowing for a wide range of mounting on any flat vertical surface in the trunk. The tank is clear to allow visually checking the fluid level. Includes a 2-way vented black plastic cap and a compression pump feed fitting. Optional upgraded blue billet water/methanol injection (WMI) cap with 1-way check valve, ES4714530 Features & Benefits Available in clear for visually checking fluid levels 8 mounting holes on the side rails Includes 2-way vented black plastic cap Includes a compression pump feed fitting Made in USA Tank dimensions: L 11" x W 4.5 x H 9"
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BMS DDP5800 Water/Methanol Injection Pump
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Burger Motorsports - Corporate Logo
T#:20815186
Part#: BMSDDP5800
Ships in 1 Business Day
Starting at $ 120.00 USD
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Starting at $ 120.00 USD
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The Burger Motorsports DDP 5800 water methanol alcohol Injection pump is a heavy-duty pump used in all of our BMS Water Injection kits. 200 psi bypass for smooth and high pressure and 1.3 GPM open flow. Made in the USA. Available with built-in quick connect fittings for 1/4" WMI line or with open 3/8" NPT threads if you plan to use braided lines.
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2 Gallon Low Profile Universal Methanol Tank
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Burger Motorsports - Corporate Logo
T#:20946755
Part#: 2G-ULPMT
In Stock
Starting at $ 179.00 USD
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Starting at $ 179.00 USD
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Integrated pump mount for a super clean install. This tank allows the pump (sold separately) to mount to the bottom of the tank making for a clean and fast installation. It’s universal and will fit a wide variety of trunk applications. The larger capacity means more time between fill ups. Offered in black for a stealth appearance and in clear to allow visually checking the fluid level. Includes a 2-way vented black plastic cap and a compression pump feed fitting. Compatible with BMS DDP5800 pumps, ES4714512 or ES4714513 Optional upgraded blue billet water/methanol injection (WMI) cap with 1-way check valve, ES4714530 Pump mounts directly to the tank Compatible with all DDP 5800 pumps Super low profile design Available in clear for visually checking fluid levels Available in black for a stealth appearance Includes 2-way vented black plastic cap 4 mounting holes in the feet of the tank Includes a compression pump feed fitting, 2 90 degree push fittings, 9" of methanol line and pump mounting hardware. Made in the USA Tank dimensions: L 15.5" x W 8" x H 8.25"
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1.25 Gallon Heavy-Duty Universal Methanol Tank
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Burger Motorsports - Corporate Logo
T#:20946761
Part#: 1.25G-UMT-CL
Ships on Jul 28, 2026
$ 69.00 USD
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This tank is thicker and stronger than BMS' basic 1-gallon WMI tank. This tank features an easy fill filler nozzle, an anti-starvation reservoir with a pre-threaded bung for the included 90º compression pump feed fitting, a spill-catcher reservoir around the filler cap, a 2-way vented black plastic cap, and is translucent to allow visually checking the fluid level. Optional upgraded blue billet water/methanol injection (WMI) cap with 1-way check valve, ES4714530 ​Features & Benefits 1.25 Gallon Tank (4.73 Liters) Anti-Starvation Reservoir Easy Fill filler Nozzle Spill-Catcher Reservoir around the filler cap Available in clear for visually checking fluid levels 8 mounting holes on the side rails Includes 2-way vented black plastic cap Includes a 90º compression pump feed fitting Tank dimensions: L 11" x W 4.5 x H 9"
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Burger Motorsport JB4-Compatible Water/Methanol Injection System - N2...
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Burger Motorsports - Corporate Logo
T#:558163
Part#: BMS-WMI
Ships on Jul 28, 2026
Starting at $ 226.99 USD
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Starting at $ 226.99 USD
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Looking to make loads of power on pump gas? Enter: water/methanol injection. Regardless if you're tuned for conventional pump gas, E85, or race fuel, use of a properly configured and integrated water/meth system will reduce temperatures, allowing you to make more power than on just conventional fuel alone. Select your engine-specific nozzles (which are standard 1/8" NPT and install in most aftermarket chargepipes), your tank to mount in the trunk, upgraded steel braided lines if you so choose, and some boost juice and you just need a management solution! Optionally, add a BMS FSB for JB4 integration!
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Water/Methanol Injection Hose - 20'
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Burger Motorsports - Corporate Logo
T#:21176944
Part#: BMS-WMI-IL
In Stock
$ 31.99 USD
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BMS Water/Methanol Injection (WMI) Solenoid W/ Filter
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Burger Motorsports - Corporate Logo
T#:21176934
Part#: BMS-WMI-SOL
Ships on Jul 28, 2026
$ 75.00 USD
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This solenoid safely stops fluid from flowing into your intake system when WMI is not in use. The solenoid features two 1/8 NPT ports with included compression 1/4 in. hose fittings for a quick leak-free connection. The included filter keeps dirt and debris out of your engine.
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WMI Inline Filter
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Burger Motorsports - Corporate Logo
T#:21176933
Part#: BMS-WMI-FIL
Ships on Jul 28, 2026
$ 15.00 USD
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This heavy duty methanol/water injection filter is specifically designed for a methanol/water system can filter particles down to 40 microns in size. It safeguards the functional components of the water/methanol system as well as your engine from particulates present in the water/methanol mixture.
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Super Atomizing Water/Methanol Injection Nozzles
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Burger Motorsports - Corporate Logo
T#:20815192
Part#: BMS.SA.WMI.NOZ
Ships on Aug 10, 2026
Starting at $ 40.00 USD
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Starting at $ 40.00 USD
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With CNC machined serviceable/cleanable nozzle inserts for precise fluid metering. Choose single or dual nozzles and match the flow rate to your power needs! ​Water/Methanol Injection (WMI) nozzles are determined by the intended power and how many bungs your charge pipe has. These nozzles are 1/8” NPT and screw in to bungs included on most aftermarket charge pipes. BMS "super atomizing" nozzles are designed and manufactured by BMS and are known for their great atomization and flow characteristics. The number on the methanol injection nozzle represents the approximate gallons per hour of fluid when at full flow. Generally speaking running two smaller nozzles is preferred to one larger nozzle for an equal flow to improve fluid atomization and distribution.
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