- Shop with confidence: competitive prices, exclusive deals, and delivery perks.
- Need it quickly? We dispatch fast-moving parts daily. Check delivery options.
- Swap or return items within the standard return period with a simple process.
- Questions about fitment or orders? Our support team is ready to help.
Similar products
Customers also bought
Details
| Specification | Value |
|---|---|
| Brand | TOPRAN |
| Operating Mode | HY |
OE/OEM numbers (7)
Search by this OE number to find compatible parts
- AUDI / CUPRA / SEAT / SKODA / VW—03L 109 521
- AUDI / CUPRA / SEAT / SKODA / VW—03L 109 521A
- AUDI / CUPRA / SEAT / SKODA / VW—059 109 521F
- AUDI / CUPRA / SEAT / SKODA / VW—059 109 521G
- AUDI / CUPRA / SEAT / SKODA / VW—059 109 521H
- AUDI / CUPRA / SEAT / SKODA / VW—05L 109 521
- PORSCHE—958 105 423 10
Where this part fits
Original-fit position for OE 05L109521. The red ring marks where this part installs on the vehicle.
About this product
TOPRAN Tappet (112 121) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Operating Mode: Hybrid — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with AUDI, CUPRA, PORSCHE, SEAT and 2 other makes 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: 001-10-29394, 03L 109 521, 03L 109 521A, 059 109 521F and 99 more. Matching these numbers confirms a like-for-like replacement with no loss of function. TOPRAN 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
About TOPRAN
TOPRAN, part of the Hans Thomsen Group headquartered in Hamburg, Germany, is a growing independent aftermarket brand focused on providing quality parts at accessible prices. TOPRAN offers a comprehensive range covering engine, cooling, electrical, braking, and body components for European vehicles. All TOPRAN products are manufactured to meet OE specifications and undergo quality testing before distribution. Combining German quality management with competitive pricing, TOPRAN is an excellent choice for cost-conscious motorists and workshops who do not want to compromise on part quality.
Suitable cars
Equivalent products (99)
Show all 99 OE numbers
Tappet TOPRAN 112 121 — compatible car models
| Car models | AUDI: A1 (8X1, 8XK), A1 Sportback (8XA, 8XF), A3 (8P1), A3 (8V1, 8VK), A3 Convertible (8P7), A3 Limousine (8VS, 8VM), A3 Limousine (8YS, 8YM), A3 Sportback (8PA), A3 Sportback (8VA, 8VF), A3 Sportback (8YA, 8YF) (+20 more) |
|---|---|
| Engines | 1.4 TDI; 1.6 TDI; 30 TDI; 2.5 TDI; 2.0 TDI; 2.7 TDI |
| Year of manufacture | 1997-2021 |
| Manufacturer article number (MPN) | 112 121 |
| OE part numbers | 03L 109 521, 03L 109 521A, 059 109 521F, 059 109 521G, 059 109 521H, 05L 109 521, 958 105 423 10 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TOPRAN 112121 . Operating Mode: HY
- 1x Tappet
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 Tappet compatible with my car?
This Tappet fits AUDI, CUPRA, PORSCHE, SEAT, SKODA and 1 more 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 TOPRAN Tappet have?
This TOPRAN Tappet has the following specifications: Operating Mode: HY. Check the full specifications table above for complete details.
What OE part numbers does this Tappet replace?
This Tappet replaces OE part numbers: 03L 109 521, 03L 109 521A, 059 109 521F, 059 109 521G, 059 109 521H, 05L 109 521, 958 105 423 10. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Tappet cost?
This TOPRAN Tappet is available for £7.99. Tappet prices vary depending on brand, specifications, and vehicle compatibility. TOPRAN parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Tappet?
Regular inspection of your Tappet 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 Tappet?
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 Tappet fitted by a professional mechanic.
Can I use this part as a replacement for OE 03L 109 521?
Yes, this TOPRAN Tappet is a direct replacement for OE part number 03L 109 521. 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.
