Rein HWU0117 Magnetic Transmission Drain Plug with Crush Washer

The Rein HWU0117 is a magnetic transmission drain plug designed as an upgraded replacement for the OE part. Constructed from high-quality aluminum with a flush tip-style captive rare-earth magnet, this drain plug does more than simply seal the transmission pan — it actively captures metallic wear particles circulating in the transmission fluid before they can cause further internal damage.

Key Features:

• Captive Rare-Earth Magnet: Flush tip-style magnet attracts metallic wear particles that may bypass the transmission filter, enabling early detection of internal wear
• Aluminum Construction: Lightweight, high-quality aluminum body with precision rolled threads for smooth installation that won't damage the transmission casing
• OE Cross-Reference: Replaces BMW OE part number 23117531356
• Includes Crush Washer: Comes with a single-use crush washer for a leak-free seal right out of the box
• Engineered to Strict Standards: Designed and manufactured to rigorous engineering quality standards for a proper, reliable fit and seal every time
• Wear Inspection Point: At every fluid service interval, the magnet provides a visible snapshot of transmission health, helping catch small issues before they become costly repairs

The Rein HWU0117 magnetic transmission drain plug is a direct, superior-quality alternative to the factory drain plug. Each fluid change becomes a quick transmission health check, allowing you to monitor wear trends over time. Precision rolled threads ensure safe installation without risk of cross-threading or damage to the transmission housing.