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BMW Intake Parts for BMW 5 Series E39 (1996-2003)

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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Mass Air Flow Sensor (MAF)

T#:36337136

Part#: 13627567451

In Stock

Sale - Save 20% $ 85.99

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

$ 68.54 USD

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$ 85.99

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

$ 68.54 USD

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PCV Valve Seperator

T#:15511828

Part#: 11617533400

In Stock

Sale - Save 1% $ 44.99

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

$ 44.51 USD

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Sale - Save 1%

$ 44.99

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

$ 44.51 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 all the components of the oil separator system together 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. Don't forget to order a valve cover gasket to make your separator change easier.

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Bremmen Parts Intake Boot - E39

For vehicles with production date up to 09/1998 and with secondary throttle body

T#:399456

Part#: 13541740931

Ships in 1 day

Sale - Save 5% $ 28.55

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

$ 27.12 USD

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$ 28.55

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

$ 27.12 USD

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Intake boot for the air flow meter

Vacuum Check Valve - E23 E24 E34 E36 E38 E39 E46 E52 E53 Z3

T#:36100155

Part#: 1168000378

In Stock

Sale - Save 35% $ 4.99

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

$ 3.26 USD

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Sale - Save 35%

$ 4.99

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

$ 3.26 USD

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A damaged, leaking, or missing vacuum check valve can lead to a range of engine performance issues. As a critical component in the vehicle's vacuum system, the check valve ensures proper air flow and pressure regulation within various engine systems. If compromised, it can cause erratic idling, poor acceleration, or rough engine performance. Additionally, a malfunctioning vacuum check valve may trigger the check engine light and could cause your vehicle to fail an emissions test due to improper control of exhaust gases. Timely replacement of a faulty vacuum check valve is essential for maintaining engine efficiency, preventing further damage, and ensuring compliance with emissions regulations.

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Air Intake Boot

For vehicles with production date from 09/1998

T#:38676207

Part#: 13541435627

In Stock

Sale - Save 24% $ 15.99

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

$ 12.23 USD

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Sale - Save 24%

$ 15.99

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

$ 12.23 USD

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Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46

For vehicles with production date from 09/1998

T#:640147

Part#: 11611432559

In Stock

Sale - Save 22% $ 23.99

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

$ 18.76 USD

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Sale - Save 22%

$ 23.99

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

$ 18.76 USD

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Crankcase Vent Hose - From Valve Cover to Oil Separator - Fit BMWs with the M52 or M54 6 cylinder engine

Bremmen Mounting Grommet Seal - BMW E36 E39 Z3 E34 E38

Up to Model Year 09/1998

T#:640144

Part#: 13411733217

Back Ordered

Sale - Save 17% $ 9.99

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

$ 8.25 USD

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Sale - Save 17%

$ 9.99

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

$ 8.25 USD

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This grommet is located on the back side of the PCV or idle control valve

BMS Billet Water/Methanol Injection Tank Cap With Safety Check Valve ...

T#:20815185

Part#: BMSWMITC

Ships in 7 Business Days

$ 59.00 USD

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$ 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

T#:558165

Part#: 1G-MT-CL

Ships in 6 Business Days

$ 30.00 USD

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$ 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

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

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

T#:20946761

Part#: 1.25G-UMT-CL

Ships on Aug 4, 2026

$ 69.00 USD

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$ 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...

T#:558163

Part#: BMS-WMI

Ships on Aug 4, 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'

T#:21176944

Part#: BMS-WMI-IL

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$ 31.99 USD

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$ 31.99 USD

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BMS Water/Methanol Injection (WMI) Solenoid W/ Filter

T#:21176934

Part#: BMS-WMI-SOL

Ships on Aug 4, 2026

$ 75.00 USD

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$ 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

T#:21176933

Part#: BMS-WMI-FIL

Ships on Aug 4, 2026

$ 15.00 USD

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$ 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

T#:20815192

Part#: BMS.SA.WMI.NOZ

Ships on Aug 17, 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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BMW Intake Parts for BMW 5 Series E39 (1996-2003)

Sub-Categories

Mass Air Flow Sensor (MAF)

PCV Valve Seperator

Bremmen Parts Intake Boot - E39

Vacuum Check Valve - E23 E24 E34 E36 E38 E39 E46 E52 E53 Z3

Air Intake Boot

Bremmen Crankcase Ventilation Hose - E39 E53 E60 E83 E46

Bremmen Mounting Grommet Seal - BMW E36 E39 Z3 E34 E38

BMS Billet Water/Methanol Injection Tank Cap With Safety Check Valve ...

1 Gallon Methanol Tank - Clear/White

BMS DDP5800 Water/Methanol Injection Pump

2 Gallon Low Profile Universal Methanol Tank

1.25 Gallon Heavy-Duty Universal Methanol Tank

Burger Motorsport JB4-Compatible Water/Methanol Injection System - N2...

Water/Methanol Injection Hose - 20'

BMS Water/Methanol Injection (WMI) Solenoid W/ Filter

WMI Inline Filter

Super Atomizing Water/Methanol Injection Nozzles

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