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Details
| Specification | Value |
|---|---|
| Brand | K&N Filters |
| MPN | rk-3956 |
| Version | Touring |
OE part numbers
No OEM references found.
About this product
When sports air filter system performance matters, the K&N Filters RK-3956 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Colour: Ceramic, Version: Touring. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with HARLEY-DAVIDSON vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. K&N Filters 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
No equivalent parts found.
Sports Air Filter System K&N Filters RK-3956 — compatible car models
| Car models | HARLEY-DAVIDSON: CVO, DYNA, ELECTRA GLIDE, FAT BOY, HERITAGE, ROAD GLIDE, ROAD KING, SOFTAIL (1701cc -), STREET GLIDE, ULTRA |
|---|---|
| Engines | CVO Street Glide (FL3, FLHXSE); 1700 Dyna Fat Bob; 1700 Electra Glide (FLHTP); 1700 Fat Boy (FLSTF); Heritage Classic; 1700 Road Glide Ultra (FLTRU); 1750 Road King; 1750 Softail Breakout (ST1); 1750 Street Glide Special; 1750 Ultra Limited |
| Manufacturer article number (MPN) | RK-3956 |
Compatibility check
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Please wait while we load vehicle compatibility information.Description and what's included
K&N Filters rk-3956 . Colour: 7. Version: Touring
- 1x Sports Air Filter System
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 Sports Air Filter System compatible with my car?
This Sports Air Filter System fits HARLEY-DAVIDSON vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this K&N Filters Sports Air Filter System have?
This K&N Filters Sports Air Filter System has the following specifications: Colour: 7; Version: Touring. Check the full specifications table above for complete details.
How much does a Sports Air Filter System cost?
This K&N Filters Sports Air Filter System is available for £335.99. Sports Air Filter System prices vary depending on brand, specifications, and vehicle compatibility. K&N Filters parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Sports Air Filter System?
Regular inspection of your Sports Air Filter System 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 Sports Air Filter System?
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 Sports Air Filter System fitted by a professional mechanic.
Is the K&N Filters RK-3956 the same as the K&N Filters 57-0070?
No, while both are Sports Air Filter System parts, they are different products. The K&N Filters RK-3956 has Colour: 7, Version: Touring. The K&N Filters 57-0070 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.
