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Details
| Specification | Value |
|---|---|
| Brand | HART |
| Fitting Position | Front Axle |
| Length [mm] | 84 mm |
| Inner Diameter [mm] | 54.0 mm |
| Outer Diameter [mm] | 75.0 mm |
| Outer Diameter [mm] | 67.0 mm |
OE/OEM numbers (5)
Search by this OE number to find compatible parts
- VW—171 412 135
- VW—171 412 303
- VW—175 412 303
- SEAT / VW—191 412 135
- SEAT / VW—357 412 135
Where this part fits
Original-fit position for OE 357412135. The red ring marks where this part installs on the vehicle.
About this product
When protective cap bellow shock absorber performance matters, the HART 423 921 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Fitting Position: Front Axle, Length [mm]: 84 mm, Inner Diameter [mm]: 54, 0 mm, Outer Diameter [mm]: 75, 0 mm, Outer Diameter [mm]: 67, 0 mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with SEAT, VW 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. This part supersedes original equipment references: 171 412 135, 171 412 303, 175 412 303, 191 412 135 and 1 more. Matching these numbers confirms a like-for-like replacement with no loss of function. HART is a recognised supplier of automotive suspension 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
Suitable cars
No equivalent parts found.
Protective Cap Bellow Shock Absorber HART 423 921 — compatible car models
| Car models | SEAT: CORDOBA (6K1, 6K2), IBIZA II (6K1), TOLEDO I (1L2); VW: CADDY I (14), CORRADO (53I), GOLF I (17), GOLF I Cabriolet (155), GOLF II (19E, 1G1), GOLF III (1H1), GOLF III Van (1H1), GOLF III Variant (1H5), GOLF II Van (19E, 1G1), GOLF Van III Variant (1H5) (+9 more) |
|---|---|
| Engines | 1.8 i; 1.6 i; 1.5; 1.8 16V; 1.1; 1.3; 1.0; 1.4; 1.8; 1.6 D; 1.6 TD; 1.9 TD; 1.6 |
| Year of manufacture | 1974-2008 |
| Manufacturer article number (MPN) | 423 921 |
| OE part numbers | 171 412 135, 171 412 303, 175 412 303, 191 412 135, 357 412 135 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
HART 423921 . Fitting Position: VA. Inner Diameter [mm]: 54,0 mm. Length [mm]: 84 mm. Outer Diameter [mm]: 67,0 mm. Outer Diameter [mm]: 75,0 mm
- 1x Protective Cap Bellow Shock Absorber
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- 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 Protective Cap Bellow Shock Absorber compatible with my car?
This Protective Cap Bellow Shock Absorber fits SEAT, VW 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 HART Protective Cap Bellow Shock Absorber have?
This HART Protective Cap Bellow Shock Absorber has the following specifications: Fitting Position: VA; Length [mm]: 84 mm; Inner Diameter [mm]: 54,0 mm; Outer Diameter [mm]: 75,0 mm; Outer Diameter [mm]: 67,0 mm. Check the full specifications table above for complete details.
What OE part numbers does this Protective Cap Bellow Shock Absorber replace?
This Protective Cap Bellow Shock Absorber replaces OE part numbers: 171 412 135, 171 412 303, 175 412 303, 191 412 135, 357 412 135. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Protective Cap Bellow Shock Absorber cost?
This HART Protective Cap Bellow Shock Absorber is available for £1.99. Protective Cap Bellow Shock Absorber prices vary depending on brand, specifications, and vehicle compatibility. HART parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Protective Cap Bellow Shock Absorber?
Regular inspection of your Protective Cap Bellow Shock Absorber 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 Protective Cap Bellow Shock Absorber?
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 Protective Cap Bellow Shock Absorber fitted by a professional mechanic.
Can I use this part as a replacement for OE 171 412 135?
Yes, this HART Protective Cap Bellow Shock Absorber is a direct replacement for OE part number 171 412 135. 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.
