BMW Intake Parts for BMW 8 Series E31 (1991-1997)

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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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Turner Aluminum Throttle Cable Bushings
For Vehicles without Electronic Throttle Controller
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T#:641028
Part#: 006585LA01-01
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No more slow starts! Does your car feel old? Age may not be the issue at all, your throttle cable bushings are mostly likely worn out and your car has lost its pep!

Your throttle cable is the main connection you have from the gas pedal to the throttle body. Do you have hesitation or delayed pedal response? Think of when you are sitting at a stop light or making a turn into a flow of traffic, you may not realize it but if you haven't replaced your throttle cable and bushings this will require you to apply pressure to the gas pedal before getting feedback which can cause slow starts at stop lights and put you in danger when merging in traffic. These are not issues with old cars, they are issues related to your throttle response!

Symptoms to look for: lackluster/sloppy throttle actuation, deformed throttle cable appearance, and bushing condition. Your throttle cable bushings can be soft, cracked or even disintegrated by now.

Upgrade from failed rubber to new billet aluminum bushings for quick gas pedal response and a better engagement with your car.

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Rein Cloth Braided Fuel/Vacuum Hose - Black - 5 Meter
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T#:378470
Part#: N203531-5
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Replace your cracked or frayed fuel or vacuum lines. 3.5mm ID
Rein Silicone Vacuum Hoses - Blue - 5 Meters (3.5mm ID)
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T#:379090
Part#: 11731259996-5
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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.

Universal High Flow Performance Air Filter - Dry (2.5" inlet) ...
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T#:47644942
Part#: 003675ECS03-02
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Universal High-Flow Air Filter

Give your engine the airflow it deserves with this reusable, high-performance air filter—perfect as a direct replacement for an ECS intake system or as the finishing touch for your custom intake project.
Dimensions: 4.5" Base OD • 6" Filter Height • 3.5" Top OD

Upgrade from your restrictive factory filter to an ECS Tuning High-Flow Dry Air Filter and let your engine breathe freely. Improved intake flow enhances power throughout the rev range while helping maintain efficient fuel economy.

Oiled vs. Dry Filters — Which Is Right for You?

Oiled Filters

Offer slightly higher airflow for maximum performance

Require more frequent cleaning

Must be re-oiled after each cleaning

Long-term reusable design saves money over disposable paper filters

Dry Filters

Provide excellent airflow with minimal maintenance

Easily cleaned with warm, soapy water—no oiling required

Still flow significantly better than OE paper filters

Fully reusable and cost-effective

Both versions deliver superior performance over stock filters while offering the long-term benefit of reusability. Choose the option that best fits your maintenance style and performance goals.

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Silicone Coupler - Straight 3" (76.20mm)
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T#:376702
Part#: 003402ECS01A-06
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Silicone Coupler - Straight 3" ID (76.20mm) x 3" L

No matter the project, ECS Tuning silicone couplers and elbows offer a high-quality, precision-engineered solution to your needs. Whether you're installing an intercooler, fabricating a custom intake system, or whatever else you can dream up, ECS Tuning has you covered.

  • High-quality silicone construction for durability
  • Precision-engineered design ensures a perfect fit
  • Versatile solution for various automotive projects
  • Enhances performance and reliability
  • Compatible with BMW and other vehicles
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Plastic Vacuum Tubing Kit - black - 8 Feet
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T#:360488
Part#: 5097T321-8FT-A
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Ensure optimal engine performance with the replacement of your vacuum system hoses. The vacuum system plays a crucial role in the engine's functionality, transforming it into an efficient pump that influences air-fuel mixture and combustion. Damaged vacuum hoses can lead to various performance issues, from rough idle to difficulties starting the engine. If you're experiencing these issues, it's time to upgrade to this plastic hose with a 2.3mm inner diameter. The hose is black, arrives in an 8-foot section, and can be easily cut to the desired size for a perfect fit.

Key Features:

  • Engine Optimization: Replacing old hoses ensures the vacuum system operates at peak performance.
  • 2.3mm Inner Diameter: Designed to meet specific engine requirements.
  • Black Color: Blends seamlessly with the engine components.
  • 8-Foot Section: Provides flexibility to cut the hose to the required length.
  • Easy Installation: Upgrade without hassle for improved engine efficiency.

Upgrade your vacuum system with this high-quality plastic hose, addressing performance issues and ensuring your engine runs smoothly.

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12.0" 3.75mm (5/32") ID Black Silicone Vacuum Hose
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T#:19825269
Part#: 2101
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aFe ProDry S Air Filter - E31 E32 E34 E53 1993-2006 with V8
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T#:2655
Part#: 31-10044
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Since 1999, aFe (Advanced FLOW Engineering) has been developing and manufacturing high quality accessories in their facility in Corona, California. Starting with air filters and intake systems, and now expanding into exhaust systems, suspension components, tuning modules, and more, aFe products are a great way to improve the performance of your BMW without altering its fundamental character. Owned by a BMW enthusiast, aFe power is recognized the world over as a leader in quality performance products for your BMW.

This is a drop-in stock replacement aFe performance air filter that installs into your BMW's factory airbox. This particular filter fits the following BMWs:


E31 8 series: 840i 840ci 1991-1999
E32 7 series: 740i 740il 1993-1994
E34 5 series : 530i 530i Wagon 540i 1993-1995
E34: M5 1991-1993
E39: M5 2000-2003
E53 X5 : X5 4.4i 4.6is 4.8is
Z8 : Z8

This version has an oil-free filter media for less maintenance. For the best flowing filter, with the best performance gain, we always recommend the standard aFe "Pro5R " filter (which has a blue pre-oiled filter media), but this oil-free filter flows only slightly less than the blue Pro5R style aFe filter, and requires no re-oiling after cleaning the filter.

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Universal Throttle Body Coupler - 45 Degree 2.5" (63.50mm)
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T#:382969
Part#: 003402ECS03A-16
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Elevate your BMW project with ECS Tuning silicone couplers and elbows, providing a high-quality, precision-engineered solution for various applications. Whether you're installing an intercooler, fabricating a custom intake system, or pursuing other automotive projects, ECS Tuning delivers reliable performance and durability. Trust ECS Tuning to meet your needs and enhance your BMW project.

  • High-quality silicone couplers and elbows for BMW projects
  • Precision-engineered for reliability and performance
  • Versatile solution for intercooler installations, custom intake systems, and more
  • Ensures durability and longevity for your automotive projects
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Rein Silicone Vacuum Hoses - Black - 5 Meters (3.5mm ID)
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T#:51848535
Part#: 51731257971-5M
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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.
aFe ProDry S Air Filter - E30 1986-1991 (no M3), 86+ 528e, E34 525i (...
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T#:2652
Part#: 31-10047
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This is a drop-in stock replacement aFe performance air filter that installs into your BMW's factory airbox offering significantly higher airflow than the stock paper filter. This particular filter fits the following BMWs:

E30 3 series : 318i 318is 1990-1991 - 318ic 1990-1993
E30 3 series : 325e 325es 325i 325is 325xi 325ic 1986-1991
E28 5 series : 528e 1986-1988
E34 5 series : 525i 1989-1990 M20 engine
E32 7 series : 750il 1988-1994 - 2 required
E31 8 series : 850i 850ci 850csi 1991-1999 - 2 required

This version has an oil-free filter media for less maintenance. For the best flowing filter, with the best performance gain, we always recommend the standard aFe "Pro5R " filter (which has a blue pre-oiled filter media), but this oil-free filter flows only slightly less than the blue Pro5R style aFe filter, and requires no re-oiling after cleaning the filter.
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BMW M62 Turner IAT Relocation Harness With Mounting Hardware ...
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Turner Motorsport - Corporate Logo
T#:391761
Part#: 014579ECS01AKT
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BMW M62 Turner IAT Relocation Harness With Mounting Hardware

Enhance the performance of your BMW M62 engine with the BMW M62 Turner IAT Relocation Harness With Mounting Hardware. This high-quality harness allows for the relocation of the intake air temperature (IAT) sensor, providing more accurate temperature readings and improving engine performance. Here are the key benefits:

  • Allows for more accurate intake air temperature readings
  • Improves engine performance and efficiency
  • Includes all necessary mounting hardware for easy installation
  • High-quality construction ensures durability and reliability

Upgrade your BMW M62 engine with the BMW M62 Turner IAT Relocation Harness With Mounting Hardware for improved performance and reliability.

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46.5mm To 61.0mm Silicone Coupler - Each
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T#:28570863
Part#: 017623ECS08A
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For optimal performance, consider the 46.5mm To 61.0mm Silicone Coupler.

Engineered with durability and functionality in mind, this silicone coupler provides a reliable connection for various components in your vehicle's intake or cooling system. Its smooth interior surface promotes efficient airflow, while its flexible and reinforced construction ensures a secure fit and prevents leaks. Enjoy hassle-free installation and enhanced performance with this premium silicone coupler.

  • Durable silicone construction
  • Smooth interior surface for efficient airflow
  • Flexible and reinforced design prevents leaks
  • Secure fit for reliable performance
  • Hassle-free installation
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aFe Pro5R Air Filter
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T#:109
Part#: 30-10044
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This is a drop-in stock replacement aFe performance air filter that installs into your BMW's factory airbox. This particular filter fits the following BMWs:

E39 5 series: 1997-2003 540i
E39 M5, 2000-2003 (**requires 2 filters)
E34 5 series: 1994-1995 530i & 540i
E38 7 series: 1995-2001 740i & 740iL
X5 4.4i 2001-2006 (E53 chassis)
Z8 roadster 2000-2003 (**requires 2 filters)


This version uses aFe's highest flowing filter media, which uses a lightly oil gauze to filter out dirt and particulates, while allowing more air to flow to the intake. For the best flowing filter, with the best performance gain, we always recommend this standard aFe filter media (often called "Pro5R ", which has a blue pre-oiled filter media). We also carry this filter in the "ProDry" grey filter media, which is oil-free for only slightly less performance and no maintenance.
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aFe Pro5R Air Filter - E30 1986-1991 (no M3), 86+ 528e, E34 525i (M20...
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AFE - Corporate Logo
T#:1703
Part#: 30-10047
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This version uses aFe's highest flowing filter media, which uses a lightly oiled gauze to filter out dirt and particulates, while allowing more air to flow to the intake. For the best flowing filter, with the best performance gain, we always recommend this standard aFe filter media (often called "Pro5R ", which has a blue pre-oiled filter media). We also carry this filter in the "ProDry" grey filter media, which is oil-free for only slightly less performance and no maintenance.

This is a drop-in stock replacement aFe performance air filter that installs into your BMW's factory airbox. This particular filter fits the following BMWs:

E30 3 series: 318i, 318is 318i Convertible 1990-1991
E30 3 series: 325e, 325es 1986-1988
E30 3 series: 325i, 325is 325ic, 325ix 1987-1991
E28 5 Series: 528e 1986-1988
E34 5 Series: 525i 1989-1990
E32 7 Series: 750il 1988-1994 (requires 2 of these filters).

 

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Genuine BMW Vacuum Hose
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T#:37535
Part#: 11747797129
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Genuine BMW Vacuum Hose Black - 3,5X2,0

BMW & MINI Silicone Coupler - Straight 2.38" (60.33mm)
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T#:376708
Part#: 003402ECS01A-03
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Upgrade your BMW or MINI with the BMW & MINI Silicone Coupler - Straight 2.38" (60.33mm). This high-quality silicone coupler is designed to provide a secure and leak-free connection for your vehicle's intake or cooling system. Engineered for durability and flexibility, it ensures optimal performance under various conditions. With its straight design and precise dimensions, this silicone coupler offers easy installation and a perfect fit for your BMW or MINI.

  • Provides a secure and leak-free connection
  • Engineered for durability and flexibility
  • Straight design for easy installation
  • Perfect fit for BMW and MINI vehicles
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Genuine BMW Intake Boot - Cylinders 7-12 - E31 850Ci, E31 850CSi ...
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T#:43008
Part#: 13711733302
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Genuine BMW Connector - Zyl.7-12

Fits BMW Engines including:
M70,S70


Forge Motorsport Valve Service Kit
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Forge - Corporate Logo
T#:28271173
Part#: FMDV004S
Ships on Aug 14, 2026
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Silicone Coupler - Straight 3 5/8" (92mm)
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T#:377483
Part#: 003402ECS01A-07
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ECS Silicone Coupler

Upgrade your BMW with the ECS Silicone Coupler. This straight 3 5/8" ID (92mm) x 3" L coupler is designed to enhance your vehicle's performance and durability. Crafted from high-quality silicone, it ensures long-lasting reliability and superior performance.

  • Enhances vehicle performance
  • Durable construction for long-lasting reliability
  • Specifically designed for BMW vehicles
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Bav Auto Intake Manifold Cover w/ PCV Valve - BMW E31 E32 E34 E38 M6...
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Bavarian Autosport - Corporate Logo
T#:639843
Part#: 11617501562
Special Order: No Guaranteed ETA
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An integral part of the emissions system, the PVC valve lets the crankcase breathe. This allows proper intake and exhaust flow, resulting in proper running and operation. Often split from underhood heat and age, this vents excess oil into the engine compartment. 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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aFe Restore Kit for Pro5R Oiled Filters
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AFE - Corporate Logo
T#:1943
Part#: 55-10460
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Bring your aFe filter back to life with a Restore kit from aFe. Included is filter cleaner & replacement oil. These air filter oils is designed to not harm MAF sensors, while allowing the filter to catch as much debris as possible.

Used for Pro 5 R filters

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Pro Dry S Restore Kit
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AFE - Corporate Logo
T#:18766692
Part#: 90-10601
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Genuine BMW Expanding Nut - 51118108028 - E63,E60 M5,E63 M6
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Genuine BMW - Corporate Logo
T#:77254
Part#: 51118108028
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$ 1.09 USD
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Genuine BMW Expanding Nut
This item fits the following BMW Chassis:
E60 M5,E63 M6,E63



Rein Cloth Braided Fuel/Vacuum Hose - Black - 1 Meter
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T#:363139
Part#: N203531-1
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Replace your cracked or frayed fuel or vacuum lines. 3.5mm ID
Rein Silicone Vacuum Hoses - Blue - 3 Feet
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T#:378472
Part#: 11731259996-1
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Replace your cracked or frayed vacuum lines. 3.5mm
4MM Silicone Vacuum Hose - Red - 9 Feet
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Forge - Corporate Logo
T#:370918
Part#: VC04R
Back Ordered
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Enhance Engine Performance with Silicone Vacuum Line

Upgrade your car's vacuum system with the Silicone Vacuum Line, a vital component that significantly impacts engine performance. Engineered to resist heat and contaminants, this silicone hose promises exceptional durability, ensuring prolonged and reliable operation.

Featuring an inner diameter of 4mm and a vibrant red color, this silicone hose arrives in a 9-foot section, offering the flexibility to customize lengths as needed. Damaged vacuum hoses can lead to various performance issues, from rough idling to engine starting problems. Promptly replace worn-out hoses to optimize your vehicle's overall performance.

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Intake Manifold Regulator Valve - Rein | BMW E31 E38 M73 5.4L Engine ...
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T#:38229095
Part#: 11157501564
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$ 34.19 USD
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$ 35.99

This product was last offered at the strikethrough price on
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$ 34.19 USD
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Intake Manifold Regulator Valve - Rein | BMW E31 E38 M73 5.4L Engine is engineered to maintain optimal airflow and engine performance by regulating intake manifold pressure. A failing regulator valve can lead to poor throttle response, rough idling, and decreased fuel efficiency. This high-quality replacement ensures proper engine function and is designed as a direct-fit solution for BMW E31 and E38 models equipped with the M73 5.4L engine. Manufactured to meet or exceed OEM standards, this valve restores efficient air intake operation, improving overall engine performance.

  • Regulates intake manifold pressure for optimal airflow and performance
  • Direct-fit replacement for BMW E31 and E38 M73 5.4L engines
  • Helps improve throttle response and fuel efficiency
  • Reduces rough idling and engine hesitation
  • Manufactured to meet or exceed OEM quality standards
  • Ensures long-lasting durability and reliability
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Rein Silicone Vaccum Hose - Black - 65 Feet
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T#:378475
Part#: 5173125797120BLK
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$ 166.75 USD
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Replace your cracked or frayed vacuum lines. 3.5mm
Rein Intake Manifold Breather Valve | BMW E31 E38 M73 5.4L engine ...
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T#:38195423
Part#: 11157501565
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This product was last offered at the strikethrough price on
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$ 27.75 USD
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$ 29.99

This product was last offered at the strikethrough price on
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$ 27.75 USD
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Rein Intake Manifold Breather Valve | BMW E31 E38 M73 5.4L engine is a crucial component for maintaining proper crankcase ventilation and engine efficiency. Designed for BMW E31 and E38 models equipped with the M73 5.4L engine, this breather valve helps regulate internal pressure within the intake manifold, preventing excessive oil consumption and ensuring smooth engine operation. Over time, a failing breather valve can cause vacuum leaks, rough idling, and reduced performance. This high-quality replacement restores proper airflow and reliability.

  • Ensures optimal crankcase ventilation for improved engine efficiency
  • Helps prevent vacuum leaks, oil consumption, and performance issues
  • Direct-fit replacement for BMW E31 and E38 M73 5.4L engines
  • Manufactured to meet or exceed OEM specifications for durability
  • Restores smooth engine operation and idle stability
  • Precision-engineered for a secure fit and easy installation
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Rein Cloth Braided Fuel/Vacuum Hose - Black - 20 Meter
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T#:378471
Part#: N203531-20
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$ 345.34 USD
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Replace your cracked or frayed fuel or vacuum lines. 3.5mm ID
Forge Silicone Vacuum Hoses
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T#:558490
Part#: FORGEVAC
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Car suffering from vacuum leaks? Choose from a 4mm, 5mm, or 6mm diameter vacuum hose from Forge to fix your leak and bring your BMW back to life.

3" To 2.5" Silicone Coupler 3" Length
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ECS - Corporate Logo
T#:363896
Part#: 003402ECS04A-02
Ships on Sep 8, 2026
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06-13-2026

$ 8.99 USD
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3" To 2.5" Silicone Coupler 3" Length

Enhance the performance and durability of your BMW or MINI with the 3" To 2.5" Silicone Coupler 3" Length. This silicone coupler provides a reliable connection between components, ensuring optimal airflow and reducing the risk of leaks. Engineered for durability and heat resistance, it withstands high temperatures and harsh conditions. Upgrade your BMW or MINI with this premium silicone coupler for improved performance.

  • Reliable connection for optimal airflow
  • Reduces the risk of leaks for enhanced performance
  • Engineered for durability and heat resistance
  • Fits both BMW and MINI models
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3MM Silicone Vacuum Hose - Red - 9 Feet
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T#:370915
Part#: VC03R
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Upgrade Your BMW with Forge 3MM Silicone Vacuum Hose - Red - 9 Feet

Upgrade your BMW's vacuum system with the Forge 3MM Silicone Vacuum Hose in Red, a high-quality solution designed for optimal performance and durability. This 9-foot silicone vacuum hose provides superior flexibility and resistance to extreme temperatures, making it ideal for various automotive applications. Engineered with precision, it ensures reliable vacuum pressure for efficient engine operation and component functionality. Whether you're replacing worn-out hoses or customizing your BMW's vacuum setup, the Forge Silicone Vacuum Hose offers reliability and performance you can trust.

  • High-quality silicone construction for durability
  • Superior flexibility for easy installation
  • Resistant to extreme temperatures
  • Ensures reliable vacuum pressure for efficient engine operation
  • Ideal for various automotive applications

Car suffering from vacuum leaks? This vacuum hose has a 3mm inner diameter. 

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4MM Silicone Vacuum Hose - Black - 9 Feet
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Forge - Corporate Logo
T#:370919
Part#: VC04B
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This product was last offered at the strikethrough price on
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$ 13.46 USD
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$ 14.99

This product was last offered at the strikethrough price on
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Car suffering from vacuum leaks? This vacuum hose has a 4mm inner diameter. 
4MM Silicone Vacuum Hose - Blue - 9 Feet
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Forge - Corporate Logo
T#:370917
Part#: VC04
Back Ordered
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This product was last offered at the strikethrough price on
07-01-2026

$ 13.46 USD
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Sale - Save 10%
$ 14.99

This product was last offered at the strikethrough price on
07-01-2026

$ 13.46 USD
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Car suffering from vacuum leaks? This vacuum hose has a 4mm inner diameter.