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Details
| Specification | Value |
|---|---|
| Brand | LIQUI MOLY |
| Container Type | D |
| Capacity [ml] | 500 ml |
OE part numbers
No OEM references found.
About this product
LIQUI MOLY Fuel Additive (21957) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Container Type: D, Capacity [ml]: 500 ml — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. LIQUI MOLY is a recognised supplier of automotive replacement 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.No equivalent parts found.
Compatibility check
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Please wait while we load vehicle compatibility information.Description and what's included
LIQUI MOLY 21957 Diesel Purge. Capacity [ml]: 500 ml. Container Type: D
- 1x Fuel Additive
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 Additive 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 Additive fits. All fitment data is verified through TecDoc.
What specifications does this LIQUI MOLY Fuel Additive have?
This LIQUI MOLY Fuel Additive has the following specifications: Container Type: D; Capacity [ml]: 500 ml. Check the full specifications table above for complete details.
How much does a Fuel Additive cost?
This LIQUI MOLY Fuel Additive is available for £22.99. Fuel Additive prices vary depending on brand, specifications, and vehicle compatibility. LIQUI MOLY 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 Additive?
Regular inspection of your Fuel Additive is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.
What tools do I need to replace a Fuel Additive?
Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the Fuel Additive fitted by a professional mechanic.
Is the LIQUI MOLY 21957 the same as the LIQUI MOLY 1001?
No, while both are Fuel Additive parts, they are different products. The LIQUI MOLY 21957 has Container Type: D, Capacity [ml]: 500 ml. The LIQUI MOLY 1001 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.
