DMR-Japan Fuel Cock Packing Kit (Pepex Seal) – Honda NS400R / NSR250R / CB400SF / CB750F / CB900F / CBR250R / CBX1000 / MVX250F / VFR400F / VT250 Integra

Restore your original Honda fuel tap with confidence using the DMR-Japan Fuel Cock Packing Kit, featuring a premium Pepex fluorine rubber seal for superior durability and sealing performance.

Designed and manufactured by DMR-Japan, this kit has become a trusted choice among motorcycle enthusiasts and professional workshops, with over 2,000 kits supplied since its release.

Unlike standard OEM seals, the Pepex seal is manufactured from fluorine rubber (FKM), offering exceptional resistance to modern fuels, heat, chemicals, wear and ageing, helping to extend the service life of your fuel cock.

Features

• Genuine DMR-Japan original product
• High-performance Pepex fluorine rubber (FKM) seal
• Superior durability compared to OEM NBR rubber
• Excellent resistance to petrol, ethanol, oil and chemicals
• Ideal for restoring leaking or worn fuel taps
• Includes replacement screws for conversion during rebuild

Kit Includes

• 1 × Fuel Cock Packing
• 1 × X-Ring
• 2 × Mounting Screws

Seal Dimensions

Fuel Cock Packing

• Outside Diameter: Approx. 26.3 mm
• Thickness: 3.3 mm
• Centre Hole: Approx. 8 mm

X-Ring

• Outside Diameter: Approx. 29.1 mm
• Inside Diameter: Approx. 25 mm
• Thickness: Approx. 2.4 mm

Why Upgrade to Pepex?

The Pepex fluorine rubber seal offers significant advantages over standard OEM rubber:

• Excellent heat resistance (up to approximately 230°C)
• Outstanding fuel and oil resistance
• Superior abrasion resistance
• Excellent resistance to ozone and weathering
• Longer service life than conventional NBR seals

This advanced sealing material is widely used in demanding aerospace and industrial applications where reliability is critical.

Fitment

Suitable for the following Honda models:

• Honda NS400R (All Models)
• Honda NSR250R MC16 (1986–1987)
• Honda NSR250R / SP MC18 (1988–1989)
• Honda CB400SF NC31
• Honda CB750F RC04 (FC Models)
• Honda CB900F SC09
• Honda CBR250R MC14 / MC17 / MC19
• Honda CBX1000 SC06
• Honda MVX250F MC09
• Honda VFR400F NC13
• Honda VT250 Integra MC08 / MC15

Important Information

• Please disassemble and check the dimensions of your existing fuel cock before ordering. Although this kit suits the models listed above, variations may exist.
• Installation is not a bolt-on repair. The original factory peening must be removed, and the fuel cock converted to use the supplied screws.
• If the aluminium fuel cock body is heavily corroded, repairs may be required before installation. Severely corroded units may not be repairable.
• Product specifications may change without notice from the manufacturer.
• Any instructions supplied with this product are likely to be in Japanese.

Give your classic Honda a long-lasting solution to fuel tap leaks with the DMR-Japan Fuel Cock Packing Kit—a premium-quality upgrade trusted by restorers and workshops worldwide.