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Details
| Specification | Value |
|---|---|
| Brand | DONALDSON |
| MPN | p550851 |
| Outer Diameter [mm] | 107 mm |
OE numbers (3)
About this product
DONALDSON Fuel Filter (P550851) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Outer Diameter [mm]: 107 mm, Filter type: Brass — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. This part supersedes original equipment references: 21737481, 21737499, 85120233, FS19765 and 5 more. Matching these numbers confirms a like-for-like replacement with no loss of function. DONALDSON is a recognised supplier of automotive filtration components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
Suitable cars
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (6)
Fuel Filter DONALDSON P550851 — compatible car models
| Manufacturer article number (MPN) | P550851 |
|---|---|
| OE part numbers | 21737481, 21737499, 85120233 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
DONALDSON p550851 . Filter type: 10. Outer Diameter [mm]: 107 mm
- 1x Fuel Filter
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 5–9 business days
- Order before 5pm — ships the next working day
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Fuel Filter compatible with my car?
Use the vehicle selector at the top of the page to check compatibility. Enter your car's make, model, and engine — we'll confirm whether this Fuel Filter fits. All fitment data is verified through TecDoc.
What specifications does this DONALDSON Fuel Filter have?
This DONALDSON Fuel Filter has the following specifications: Outer Diameter [mm]: 107 mm; Filter type: 10. Check the full specifications table above for complete details.
What OE part numbers does this Fuel Filter replace?
This Fuel Filter replaces OE part numbers: 21737481, 21737499, 85120233. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Fuel Filter cost?
This DONALDSON Fuel Filter is available for £39.99. Fuel Filter prices vary depending on brand, specifications, and vehicle compatibility. DONALDSON parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Fuel Filter?
Signs include difficulty starting, engine stalling, hesitation during acceleration, reduced fuel economy, or the check engine light illuminating.
What tools do I need to replace a Fuel Filter?
Tools needed: fuel line quick-release disconnect tools (plastic clip set), drip tray, fuel-safe gloves, new filter with fittings. Difficulty: Moderate DIY. Safety warning: Relieve fuel system pressure before opening any line (run engine until it stalls or use the Schrader valve if present). No open flames or sparks -- petrol vapour is highly flammable.
Can I use this part as a replacement for OE 21737481?
Yes, this DONALDSON Fuel Filter is a direct replacement for OE part number 21737481. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
