37H770L - Sedimentor O-Ring by AftermarketFuel System Part Land Rover Range Rover Defender, Discovery, Range Rover

37H770LLR - Sedimentor O-Ring

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Genuine: Original manufacturer part. This product is the original part designed and produced by the vehicle manufacturer.

Sedimentor O-Ring for the diesel fuel filter assembly.

This rubber sealing ring seals the sedimentor bowl against the filter head, preventing fuel leaks. Also serves as the fuel filter sealing washer.

Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic up to 1994

Fitment Notes DEFENDER 1987-2006 — Diesel: fuel filter sealing washer & sedimentor O-ring
DISCOVERY 1 1989-1998 — Diesel filter & sedimentor O-ring (VIN FA393361 to WA799999)
RANGE ROVER CLASSIC 1992-1994 — Diesel filter & sedimentor O-ring (from VIN JA610294)

Alternative Codes

37H770L37H770LLR

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Job kits containing this part

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Frequently asked questions

What is the 37H770L sedimentor O-ring for?

The 37H770L sedimentor O-ring seals the sedimentor bowl against the diesel fuel filter head, preventing fuel leaks. On these installations it also serves as the fuel filter sealing washer, so it does double duty in the filter assembly.

Should the sedimentor O-ring be replaced every time?

Replace the O-ring whenever you disturb the sedimentor bowl or change the diesel fuel filter. Rubber seals take a set once compressed and can weep fuel if reused, so fitting a fresh one each service is the safe approach.

Which models and VIN ranges does it fit?

It fits the diesel Defender (1987-2006), Discovery 1 (1989-1998, VIN FA393361 to WA799999) and Range Rover Classic (1992-1994, from VIN JA610294). Use your VIN to confirm the correct fuel filter and sedimentor setup for your vehicle.