BMW Transmission Filter Kits & Transmission Service Parts for BMW E21 320i M10 1.8L

Red Line MTL Manual Transmission Fluid/Oil

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T#:3426

Part#: MTL

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$ 25.49 USD

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Red Line 70W/80W GL-4 MTL gear oil (SAE 5W30/10W30 engine oil viscosity) designed for use in BMW manual transmissions. Provides excellent protection of gears and synchronizers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting. The MTL can be used as a replacement for the factory MTF or MTF-LT2 used by BMW. Add MTL to older BMWs that have become tough to shift will restore shift smoothness. Many experts agree that this is best lubricant to use in BMW manual transmissions. Sold by the quart.

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Red Line 75W-90 Differential Gear Oil

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T#:3605

Part#: 8352257904

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$ 25.99 USD

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Red Line 75W90 is a full synthetic high-performance gear oil that is an excellent substitute for expensive factory fluid and an upgrade over off-the-shelf economy fluid. Red Line thoroughly evaluates the manufacturer's recommendations and only makes a fluid recommendation if their own product meets or exceeds the original specification. In many cases the Red Line synthetic will outperform the factory supplied fluids. We've been using Red Line Oil in our BMWs since we opened in 1994 and it remains our best selling BMW differential fluid. 75/90 is the weight most commonly used in BMW differentials since the 1960s, including the factory clutch-type limited-slip diffs (exceptions being M3/M5/M6 cars since 2001). We use 75W90 in nearly all BMW chassis and the custom differentials that we sell. It's great for the street where the polyol-ester base has natural lubricity and friction modifiers lead to smoother and quieter operation with lower operating temps than the factory fluid. We also use it in some track cars that don't already use the more aggressive 75/90NS fluid (without friction modifiers).

Recommended or exceeds specifications for API GL-5, GL-6, MT-1, MIL-L-2105E, SAE J2360, and Chrysler spec MS-9763. Matches the specifications for the factory BMW SAF-XO diff fluid (#07512293972).

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Red Line 75W110 Differential Gear Oil

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T#:388297

Part#: 57804

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$ 25.89 USD

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Redline's 75W110 suprasses all GL-5 specifications, and its full synthetic formula is engineered to provide superior wear resistance with longer service intervals. Special friction modifiers for clutch-type LSDs allow for flawless operation even in extreme conditions. It offers less noise and higher film strength than 75W90 and less drag than 75W140, making it a great fluid for troubleshooting noisy gear sets.

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Red Line Manual Transmission / Differential Fluid 75w90

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T#:394768

Part#: REDLINE4A

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Starting at $ 25.99 USD

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Starting at $ 25.99 USD

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Red Line 75W90 is a full synthetic high-performance gear oil that is an excellent substitute for expensive factory fluid and an upgrade over off-the-shelf economy fluid. Red Line thoroughly evaluates the manufacturer's recommendations and only makes a fluid recommendation if their own product meets or exceeds the original specification. In many cases the Red Line synthetic will outperform the factory supplied fluids. We've been using Red Line Oil in our BMWs since we opened in 1994 and it remains our best selling BMW differential fluid. 75/90 is the weight most commonly used in BMW differentials since the 1960s, including the factory clutch-type limited-slip diffs (exceptions being M3/M5/M6 cars since 2001).

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75w90NS GL-5 Gear Oil - 1 Quart

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T#:31556153

Part#: 1063078TSP

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$ 25.49 USD

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Red Line 75W-140NS Differential Oil

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T#:389801

Part#: 57104

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$ 25.49 USD

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Red Line Lightweight ShockProof� Gear Oil

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T#:1233

Part#: TMS1233

Ships on Jul 30, 2026

$ 25.99 USD

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A unique gear oil designed to lubricate racing transmissions and transaxles which see serious loads (not recommended for most syncro-type transmissions). It has excellent low-temperature flow which allows easier shifting when cold. May be used to obtain maximum power transfer in racing differentials which do not see high temperatures. Similar to a 75W140 gear oil, but with the lower internal friction of an SAE 30 motor oil.Used in two-stroke and four-stroke motocross transmissions (often mixed in equal parts with SuperLight ShockProof™ Gear Oil). Used in most road-racing differentials with moderate power and dogring racing transaxles.

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SuperLight ShockProof Gear Oil - 12/1quart

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T#:22789648

Part#: 58504

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$ 25.99 USD

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SuperLight ShockProof Gear Oil stands out as a specialized lubricant meticulously crafted for high-performance applications, specifically tailored for transmissions and gearboxes. This product, hailing from the renowned Red Line Oil, is intricately engineered to deliver exceptional protection even in the most demanding conditions. Here's a breakdown: SuperLight Formula: The "SuperLight" designation signifies that this gear oil is formulated to be lightweight while upholding robust performance characteristics. This makes it a favored choice in racing and high-performance environments, where minimizing fluid friction and enhancing efficiency are paramount. ShockProof Technology: The incorporation of "ShockProof" technology underscores the gear oil's ability to provide outstanding protection against shock loads and extreme pressures. This feature is particularly crucial in scenarios where gears face substantial impact or stress, such as in racing or aggressive driving. High-Performance Applications: Tailored for high-performance and racing vehicles, SuperLight ShockProof Gear Oil is adept at handling the rigorous conditions experienced by transmissions and gearboxes in such demanding applications. Reduced Friction: The lightweight composition of the oil contributes to friction reduction, potentially elevating the overall efficiency of the transmission or gearbox. This characteristic can translate to improved power transfer and enhanced performance. Red Line Oil: As a reputable manufacturer, Red Line is synonymous with producing top-quality lubricants for various automotive applications. Their products enjoy popularity among automotive enthusiasts and industry professionals alike.

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Red Line Heavy ShockProof� Gear Oil

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T#:1234

Part#: TMS1234

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$ 25.99 USD

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A unique lubricant containing a suspension of solid microscopic particles as an extreme pressure agent--unique solid dispersion which cushions gear teeth to help prevent tooth breakage and allows the use of lower viscosities. Recommended for heavily-loaded racing differentials and transmissions, Off Road racing and problem gearboxes. The viscosity characteristics allow the lubricant to resist throwoff and provide a film thickness similar to a 75W250 grade, while providing the same low fluid friction as an SAE 75W90. We have been using RedLine Oil in our street cars and race cars for years. Hands-down, it is the Number One brand of high performance lubricant for BMWs.

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Red Line Manual Transmission/Differential Fluid 75W-90

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T#:394833

Part#: REDLINE25A

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Starting at $ 97.99 USD

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Starting at $ 97.99 USD

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Red Line MTL may be used in transmissions which recommend 75W, 80W, or 85W GL-4 gear oils, or SAE 30 or 5W/10W30 motor oils. If a 90W GL-4 or SAE 40, 10W40, or 15W40 is required, MT-90 may be used. If the transmission or transaxle requires an SAE 90 GL-5 gear oil, then Red Line 75W90NS or 75W140NS Gear Oil may be used.

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Adapter Set For Transmission Fluid Pump

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T#:29101662

Part#: 9999901001

Back Ordered

$ 91.99 USD

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$ 91.99 USD

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The Meyle Adapter Set for the Transmission Fluid Filler Pump is designed for a wide range of Euro and domestic vehicles. This set allows you to maximize the utility of Meyle's premium-built pump across various makes in your driveway. Each adapter easily attaches to the filler's coupler, ensuring quick and seamless transitions between adapters. The set comes in a blow-molded case, providing convenient and mess-free storage.

Please note: The Meyle transmission filler tool is sold separately. The filler tool part number is T29068522.

Includes:

BMW, Volvo Adapter (5/16" -24 UNF)
VW, Audi, Porsche Adapter (M10 x 1.00)
VW Adapter (Alternate)
VW, BMW Adapter (Alternate)
Nissan, Honda, BMW Adapter (Alternate)
Audi, VW, Seat, Skoda Adapter (M24 x 1.50)
Audi Adapter (M22 x 1.50)
Mercedes-Benz Adapter (M12 x 1.50)
Toyota, Lexus Adapter (M18 x 1.50)
Ford, Mazda Adapter (1/8" NPT)

WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. See above warning label as well as http://www.p65warnings.ca.gov for further information on Proposition 65 warnings.

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Red Line D4 ATF Automatic / Manual Transmission Fluid

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T#:394725

Part#: REDLINE1A

In Stock

$ 18.99

This product was last offered at the strikethrough price on
06-16-2026

Starting at $ 18.79 USD

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Starting at $ 18.79 USD

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All sets of 12 now 10% off regular price!

Synthetic D4 ATF is suitable for use where Dexron III, Dexron II, or Mercon fluids are recommended. ATF D4 is similar to Red Line's MTL formula and can be used in many BMW manual transmissions where MTF or MTF-LT2 is called for. The D4 ATF provides significantly improved gear protection than most OEM oils. The balanced frictional characteristics provides smooth and consistent shifts for extended drain intervals. The superior stability compared to petroleum ATFs allows high-temperature operation without varnishing valves and clutches which leads to transmission failure.

Features:

Provides G-4 level gear protection (suitable for transmissions and transaxles, like the Corvette T-56).
Provides smooth and consistent shifts.
More stable than petroleum fluids; suitable for extended drain intervals.
Does not varnish at high temperatures.
Improved cold weather characteristics.

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Red Line 15W-40 Synthetic Oil - for Diesel's - 1 quart

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T#:201458

Part#: 21404

Ships on Aug 3, 2026

$ 18.99 USD

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$ 18.99 USD

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Recommended for API CJ-4/CI-4 Plus/CI-4/CF/CH-4/CF-4

Popular for Light Duty trucks including Chevrolet Duramax, Dodge Cummins, Ford Power Stroke

Best choice in medium and heavy-duty diesel truck engines for maximum durability

Improved drain intervals provide excellent value for commercial fleet use

Also for API SM/SL/SJ/SH/SG/CF and ACEA A3/B3/B4 E7/E9, MB 228.3

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Transmission Fluid Filler With Adapter Set - 12.5 Liter

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T#:29101665

Part#: 999 990 1000/S

Special Order: No Guaranteed ETA

$ 426.99 USD

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$ 426.99 USD

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The Meyle Transmission Fluid Filleris the most robust transmission filling tool on the market. With a 12.5-liter capacity, it provides ample room for filling and flushing any transmission. You can use it manually with a hand pump or connect it to an air compressor for a pneumatic filling process. This tool helps you complete the job quickly and reliably. Every component of this filler, from the hand pump to the reinforced hose and premier coupler, to the tank itself, showcases the premium craftsmanship synonymous with Meyle. This durable filler will be your trusted companion for every transmission fluid change throughout its lifetime.

The Meyle Adapter Set for the Transmission Fluid Filler Pump is designed for a wide range of Euro and domestic vehicles. This set allows you to maximize the utility of Meyle's premium-built pump across various makes in your driveway. Each adapter easily attaches to the filler's coupler, ensuring quick and seamless transitions between adapters. The set comes in a blow-molded case, providing convenient and mess-free storage.

Includes:

Hand Pump
Reinforced Hose
Coupler (for adapter fittings, sold separately)
Pressure Gauge
Pressure Relief Valve
BMW, Volvo Adapter (5/16" -24 UNF)
VW, Audi, Porsche Adapter (M10 x 1.00)
VW Adapter (Alternate)
VW, BMW Adapter (Alternate)
Nissan, Honda, BMW Adapter (Alternate)
Audi, VW, Seat, Skoda Adapter (M24 x 1.50)
Audi Adapter (M22 x 1.50)
Mercedes-Benz Adapter (M12 x 1.50)
Toyota, Lexus Adapter (M18 x 1.50)
Ford, Mazda Adapter (1/8" NPT)

WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. See above warning label as well as http://www.p65warnings.ca.gov for further information on Proposition 65 warnings.

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Meyle Automatic Transmission Fluid Plus 9 - 1 Liter

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T#:55569543

Part#: 0140193200

Special Order: No Guaranteed ETA

$ 24.99 USD

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$ 24.99 USD

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Don't let fluid breakdown slow down your shifts or trigger performance-robbing transmission slip when you're pushing your car to the limit. This Meyle ATF Plus 9 high-performance transmission fluid is engineered to withstand the extreme thermal loads and intense shear stress generated during aggressive street driving and high-RPM track sessions. Its advanced synthetic formula provides a robust lubricating film that limits friction within the gearsets and maintains crisp clutch engagement, ensuring your multi-speed automatic handles rapid downshifts and hard acceleration flawlessly.

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Transmission Fluid Filler - 12.5 Liter

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We Price Match - Give Us A Call or Chat! This filler does NOT include the adapter set to allow the hose to reach the transmission fluid pan. The adapte

T#:29068522

Part#: 9999901000

Special Order: No Guaranteed ETA

$ 368.99 USD

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$ 368.99 USD

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The Meyle Transmission Fluid Filleris the most robust transmission filling tool on the market. With a 12.5-liter capacity, it provides ample room for filling and flushing any transmission. You can use it manually with a hand pump or connect it to an air compressor for a pneumatic filling process. This tool helps you complete the job quickly and reliably. Every component of this filler, from the hand pump to the reinforced hose and premier quick-coupler, to the tank itself, showcases the premium craftsmanship synonymous with Meyle. This durable filler will be your trusted companion for every transmission fluid change throughout its lifetime.

Please note: This filler does NOT include the adapter set to allow the hose to reach the transmission fluid pan. The adapter set part number is T29101662.

Includes:

Hand Pump
Reinforced Hose
Quick-Coupler (for adapter fittings, sold separately)
Pressure Gauge
Pressure Relief Valve

WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. See above warning label as well as http://www.p65warnings.ca.gov for further information on Proposition 65 warnings.

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BMW Transmission Filter Kits & Transmission Service Parts for BMW E21 320i M10 1.8L

Sub-Categories

Red Line MTL Manual Transmission Fluid/Oil

Red Line 75W-90 Differential Gear Oil

Red Line 75W110 Differential Gear Oil

Red Line Manual Transmission / Differential Fluid 75w90

75w90NS GL-5 Gear Oil - 1 Quart

Red Line 75W-140NS Differential Oil

Red Line Lightweight ShockProof� Gear Oil

SuperLight ShockProof Gear Oil - 12/1quart

Red Line Heavy ShockProof� Gear Oil

Red Line Manual Transmission/Differential Fluid 75W-90

Adapter Set For Transmission Fluid Pump

Red Line D4 ATF Automatic / Manual Transmission Fluid

Red Line 15W-40 Synthetic Oil - for Diesel's - 1 quart

Transmission Fluid Filler With Adapter Set - 12.5 Liter

Meyle Automatic Transmission Fluid Plus 9 - 1 Liter

Transmission Fluid Filler - 12.5 Liter

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