Original ZF O-Ring 38×3 mm – Part No. 0634316059 Genuine ZF Transmission Seal for Sensor & Cover Joints

Looking for authentic ZF parts? This is the original ZF O-Ring (Part Number: 0634316059, Size: 38×3 mm) , a precision oil-resistant sealing ring designed for sensor ports, breather units, and cover joints in ZF transmissions. As a trusted ZF parts supplier, we offer genuine-spec components made from high-quality NBR rubber to ensure reliable, leak-free performance under pressure and extreme temperatures. Whether you’re searching for a professional ZF parts dealer or need durable ZF gearbox parts, this OEM-standard O-ring is essential for transmission maintenance, overhaul, and repair of trucks, buses, and commercial vehicles.

‌Product Overview‌

The ZF O-Ring 38×3 mm (Part No. 0634316059) is a critical static sealing component used in ZF mechanical and automated manual (AMT) transmissions. It is commonly installed around speed sensors, temperature probes, inspection plugs, and housing covers where a tight, oil-tight seal is required to prevent gear oil leakage and contamination ingress.

Made from high-performance nitrile butadiene rubber (NBR) , this O-ring offers excellent resistance to mineral-based lubricants, fuels, and operating temperatures ranging from -40°C to +120°C. Its robust construction ensures long-term durability even in heavy-duty applications such as long-haul trucks, city buses, construction equipment, and fleet vehicles.

This O-ring is frequently replaced during routine transmission servicing or overhauls—especially when diagnosing minor oil seepage or preparing for reassembly after internal repairs. Compatible with various ZF Ecomid, ZF S6 series, and other widely used transmission models, it fits popular commercial vehicle platforms including MAN, Scania, DAF, Volvo, Sinotruk, Foton, and more.

As a certified ZF parts supplier, we deliver OEM-equivalent quality with full traceability—making us your reliable global ZF parts dealer for workshops, distributors, and fleet maintenance teams.

Technical Specifications (Technical Data Table)

Installation Tip: Always clean the groove and mating surface before installing the new O-ring. Remove any old rubber residue or debris using a plastic scraper and degreaser. Lightly lubricate the O-ring with transmission oil or silicone grease to prevent pinching or twisting during assembly. Do not stretch excessively—position gently by hand. After installation, refill oil and run the engine briefly; check for leaks around sensor ports or plugs. Replace all old O-rings during overhauls—even if they appear intact. Recommended for use by trained technicians performing ZF transmission maintenance.

Packaging & Shipping

By Express :     Suitable for sample order or <50 KG        Fast:3-10 days       High shipping cost         Door to door service
By Air :   Suitable for >50 KG         Fast: 3-7 days       Lower than express cost         Airport to airport service
By Sea:   Suitable for >300 KG     Lower cost port to port service

As a leading supplier and dealer of ZF parts, we provide genuine components to maintain the integrity and efficiency of your gearbox system. Trust in our expertise and quality assurance to keep your ZF gearbox running smoothly.