Turner Motorsport for BMW 5 Series E39 (1996-2003)

Turner Motorsport Polished Valve Cover Cap Nut (11121738607) - Priced...

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T#:54852009

Part#: 059043LA04KT

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$ 4.99 USD

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$ 4.99 USD

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Over time, the factory valve cover hardware on M50, M50TU, M52, M52TU, M54, S50 (US), and S52 engines is subjected to continuous heat cycling, oil vapor, and moisture, causing original cap nuts to oxidize, corrode, or thread-strip during routine maintenance. Our Polished Valve Cover Cap Nut serves as a direct replacement designed to address these common failure points while improving upon overall engine bay aesthetics.

Because maintaining precise gasket compression is critical to preventing oil leaks, these cap nuts and washers are machined directly to OE-style dimensions. This exact fitment allows for direct compatibility with original and replacement valve cover studs (see T#55317643) and ensures the hardware can be torqued precisely to OEM specifications without guesswork. Manufactured to grade 8.8 structural strength standards, the hardware maintains the necessary clamp force required under normal and high-performance engine operating conditions.

To resist corrosion, both the cap nut and washer undergo an electroless nickel plating process during production. Unlike standard zinc coatings that dull or rust over time, electroless nickel provides a uniform layer of corrosion resistance that withstands long-term chemical exposure and extreme temperature swings while giving the hardware a polished, high-end appearance. Each cap nut assembly includes an OE rubber washer seal, ensuring a tight, leak-free barrier that prevents oil from escaping through the mounting studs.

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Turner Motorsport Ignition Coil Heat Shield - M52/S52

For Vehicles with a Production Date up to 09/1998

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T#:58745788

Part#: 059029LA02KT

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$ 179.99 USD

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$ 179.99 USD

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Extreme engine bay heat is the enemy of ignition reliability on the track. Engineered specifically for OBD2 BMW M52 and S52 platforms, our Stainless Steel Coilpack Heat Shield delivers track-tested thermal protection where your engine needs it most. Designed to cover the entire length of the valve cover, this shield acts as a thermal barrier for cooked coilpacks and valve covers. Upgrade the look of your stock engine bay or a non-negotiable upgrade for forced-induction setups with top-mount turbo downpipes routed across the top of the engine.

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Turner Motorsport Gift Cards

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T#:350917

Part#: TMSGC

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Starting at $ 5.00 USD

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Starting at $ 5.00 USD

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Turner Motorsport has Gift Cards available for everyone on your shopping list! They are available in any amount you choose - simply select your denomination, add to cart, and you're off to the races.

Each Turner Motorsport Gift Card features a dramatic photograph of a Turner Motorsport BMW.

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Turner Motorsport Valve Cover Stud (11121718856) - Priced Each ...

10X Entries Into Our F80 M3 Sweepstakes

T#:55317643

Part#: 059043LA03

In Stock

$ 4.99

This product was last offered at the strikethrough price on
09-29-2026

$ 3.99 USD

Limited Qty Sale

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Qty

$ 4.99

This product was last offered at the strikethrough price on
09-29-2026

$ 3.99 USD

Limited Qty Sale

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This M7/6x29.5 threaded stud is used for securing the valve cover to the cylinder head on all M50, M50TU, M52, M52TU, M54, S50 (US), and S52 engines. Despite this crucial role in engine sealing and construction, BMW decided to discontinue this vital factory part in 2023. Recognizing the gap left by the discontinued factory hardware, our team of BMW enthusiasts reverse-engineered the original part—improving its materials and finish to bring a higher-quality, long-lasting solution to the market. Manufactured from high-strength Grade 8.8 steel and finished with a protective zinc coating, this upgraded stud delivers exceptional durability, reliable torque retention, and exceptional corrosion resistance under the hood.

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Turner Motorsport Racing Sticker Pack - Choose Your Color

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T#:41492594

Part#: TMSSTICKERPK

Ships in 4 Business Days

Sale - Save 25% $ 25.99

This product was last offered at the strikethrough price on
06-14-2026

Starting at $ 19.49 USD

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Sale - Save 25%

$ 25.99

This product was last offered at the strikethrough price on
06-14-2026

Starting at $ 19.49 USD

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We race our BMWs and we want to help you race your own! Sign up for our Race Credit Program and take advantage of in-store credit to help keep you and your BMW on track.

5-series Strut/Shock Mount Kit - E39 540i with Standard Suspension ...

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T#:338712

Part#: TMS182515

Ships on Mar 30, 2027

$ 756.99

This product was last offered at the strikethrough price on
06-26-2026

Starting at $ 640.92 USD

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Starting at $ 640.92 USD

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Part of maintaining the precision and crisp handling of your BMW is with refreshing the shock mounts from time to time. The rubber parts that mount the front struts and rear shocks to the chassis suffer from age and mileage just like any other rubber part on the car. Over time they become weak and sloppy and that leads to poor ride characteristics, alignment issues, poor steering feedback and the associated clunks and other noises.

This set of stock mounts replaces the original worn-out shock mounts, bushings, bearings, bump stops, and pads on your existing suspension. This package replaces the mounts, pads, bump stops, and hardware used in the standard suspension. This kit will only work in a standard, non-lowered suspension because of the travel the bump stops allow. If you're installing new struts and shocks or want to refresh your worn mounts this is the mount package you need. Installing new mounts with new struts and shocks will ensure proper performance and avoid doing the labor twice if a used mount fails soon after. These are all factory BMW or OEM parts so they fit right and perform just like the factory original parts.

Included in our E39 mount kit is:

front strut bearing dust cap

front strut mount

front upper cupped washer (lower dust cap)

front bump stop

flat washer

front upper spring plate

front upper spring pad

front lower spring pad

rear upper cupped washer

rear shock mount

rear upper spring pad

rear lower cupped washer

rear bump stop

rear lower spring pad You save $$ when buying all of these parts as a package!!

Note for 1997-1999 528i, 540i: BMW had a factory recall to replace the front struts and lower spring perches on pre-2000 528i and 540i models. The lower spring perch was redesigned to be stronger and our mount kits cover front struts that have already been replaced under this recall. If yours has not been done we strongly recommend contacting your BMW dealer and having the recall and replacement parts installed. This does not apply to most aftermarket struts, including Bilstein, as their spring perch incorporates the new design.

This item fits the following BMWs:
1997-2003 E39 BMW 540i
with standard suspension

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Turner Motorsport for BMW 5 Series E39 (1996-2003)

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Turner Motorsport Polished Valve Cover Cap Nut (11121738607) - Priced...

Turner Motorsport Ignition Coil Heat Shield - M52/S52

Turner Motorsport Gift Cards

Turner Motorsport Valve Cover Stud (11121718856) - Priced Each ...

Turner Motorsport Racing Sticker Pack - Choose Your Color

5-series Strut/Shock Mount Kit - E39 540i with Standard Suspension ...

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