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If your M50, M52, or M54 engine takes a few seconds to build oil pressure after sitting, there's a good chance that your factory oil filter housing drain back valve has failed. Over time, the factory plastic check valve degrades, allowing oil to drain completely out of the housing and back into the oil pan while sitting. Every cold start essentially becomes a dry start, resulting in a loud ticking noise and causing unnecessary wear on your engine's internals.
Unfortunately, BMW does not offer this check valve as a standalone part, forcing you to purchase a costly, complete oil filter housing assembly just to fix one failed plastic component. Thankfully, our team of BMW enthusiasts took note of this common failure mode and designed a permanent, cost-effective fix.
Our Billet Oil Filter Housing Drain-Back Valve is designed as a direct-fit upgrade for your factory oil filter housing. CNC-machined from high-strength billet aluminum, this upgraded valve restores positive sealing to keep the oil filter housing fully primed. Maintaining this hydraulic prime ensures rapid oil pressure stabilization upon startup, directly mitigating dry-start bearing wear and top-end lifter starvation without requiring the purchase of a complete OEM housing assembly.
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.
This product was last offered at the strikethrough price on
06-14-2026
This product was last offered at the strikethrough price on
06-14-2026
If you're experiencing hard starting, flaky charging, or other electrical issues, your engine ground strap may be the culprit. On older BMWs, the engine ground strap is a thin, non-insulated cable that spans from the engine mount arm to the frame horn. Despite the seemingly simple nature of this part, on older cars, it is known to cause massive headaches. Due to its non-insulated design, years of exposure to water, dirt, and road salt will cause the wire to corrode, ultimately leading to complete failure. A break in this cable will cause an open circuit, resulting in issues with the vehicle's electrical system and potentially leading to a no-start condition.
To solve this issue, ECS has engineered an exact-fit, upgraded ground strap for your BMW! Unlike its OEM counterpart, this design features insulated, large-gauge copper wire for dependable conductivity and long-lasting durability. Additionally, factory-style lugs are zinc-coated, crimped, and soldered, ensuring protection against corrosion and oxidation.
Whether you're replacing a visibly corroded strap or proactively preventing failure, this solution from ECS is sure to provide lasting performance and protection.
FEATURES
Direct-fit replacement and upgrade for E30 (318i/is), E36, E39, E46, and others Solves intermittent grounding issues caused by aging OEM straps Clean, stealthy design that fits seamlessly in factory engine bays Factory length and lug orientation for drop-in fitment 2 AWG tinned copper cable for excellent conductivity and corrosion resistance Zinc-coated lugs, crimped and soldered to resist moisture and oxidation Black UL1015-grade insulation withstands oil, heat, and abrasion Discreet ECS label for a clean, OEM+ look Replaces OEM part numbers 12421737755 and 12421714262.
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
Whether you are building a high-performance engine or simply performing a routine rebuild, getting your piston ring end gaps and installation right is critical for optimal engine performance, compression, and longevity. Designed to meet strict standards, this comprehensive toolset provides everything you need to file, measure, and install piston rings safely without causing damage.
KIT CONTENTS
Schwaben Piston Ring Filer
Easily modify piston rings for OEM engine rebuilds and boosted applications Cuts quickly and smoothly, allowing you to easily avoid filing in excess Durable, bench-mountable construction with a long-lasting diamond abrasive wheel Piston Ring Installation Tool
Ensures even tension distribution during expansion Accommodates all pistons ranging from 60 mm to 175 mm in diameter Features an easy thumb-release locking mechanism for quick and secure operation Feeler Gauge Set
16 blades - 0.002-0.025 inch thickness measurements
This product was last offered at the strikethrough price on
07-15-2026
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
This product was last offered at the strikethrough price on
08-14-2026
