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Details
| Specification | Value |
|---|---|
| Brand | HEPU |
| MPN | pk05603th |
| Width [mm] | 30 mm |
| Fits thermostat with opening temperature [°C] | 87 °C |
OE/OEM numbers (3)
Search by this OE number to find compatible parts
- AUDI / VW—078 121 004 L
- AUDI / VW—078 121 004 R
- AUDI / VW—078 121 006 A
Where this part fits
Original-fit position for OE 078121006A. The red ring marks where this part installs on the vehicle.
What's in the kit
This kit ships with 7 factory-matched components. Each part below is supplied as part of the kit; click any linked MPN to view that component on its own.
| # | Part number | Component | Qty |
|---|---|---|---|
| 1 | P560 | Water Pump, engine cooling
| 1 |
| 2 | 29-0057 | Timing Belt
| 1 |
| 3 | 14-0088 | Tensioner Pulley, timing belt
| 1 |
| 4 | 15-0089 | Deflection Pulley/Guide Pulley, timing belt
| 1 |
| 5 | 13-0262 | Vibration Damper, timing belt | 1 |
| 6 | 10-0284 | Tensioner Lever, timing belt | 1 |
| 7 | TM1314 | Thermostat, coolant
| 1 |
About this product
When water pump timing belt kit performance matters, the HEPU PK05603TH delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Number of Teeth: 253, Width [mm]: 30 mm, Supplementary Article/Supplementary Info: 182, Pulleys contained: Copper, Supplementary Article/Info 2: 536. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with AUDI 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: 0066452, 0066453, 0066492, 0066711 and 186 more. Matching these numbers confirms a like-for-like replacement with no loss of function. HEPU is a recognised supplier of automotive engine timing 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
Equivalent products (191)
Show all 191 OE numbers
Water Pump Timing Belt Kit HEPU PK05603TH — compatible car models
| Car models | AUDI: A4 B5 (8D2), A4 B5 Avant (8D5), A6 C5 (4B2, 4B4), A6 C5 Avant (4B5, 4B6), ALLROAD C5 (4BH) |
|---|---|
| Engines | S4 quattro; RS4 quattro; 2.7 T; 2.7 T quattro |
| Year of manufacture | 1994-2006 |
| Manufacturer article number (MPN) | PK05603TH |
| OE part numbers | 078 121 004 L, 078 121 004 R, 078 121 006 A |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
HEPU pk05603th . Fits thermostat with opening temperature [°C]: 87 °C. Number of belts: 1. Number of Teeth: 253. Pulleys contained: 4. Supplementary Article/Info 2: 536. Supplementary Article/Supplementary Info: 182. Width [mm]: 30 mm
- 1x Water Pump Timing Belt Kit
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 Water Pump Timing Belt Kit compatible with my car?
This Water Pump Timing Belt Kit fits AUDI 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 HEPU Water Pump Timing Belt Kit have?
This HEPU Water Pump Timing Belt Kit has the following specifications: Number of Teeth: 253; Width [mm]: 30 mm; Supplementary Article/Supplementary Info: 182; Pulleys contained: 4; Supplementary Article/Info 2: 536; Number of belts: 1. Check the full specifications table above for complete details.
What OE part numbers does this Water Pump Timing Belt Kit replace?
This Water Pump Timing Belt Kit replaces OE part numbers: 078 121 004 L, 078 121 004 R, 078 121 006 A. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Water Pump Timing Belt Kit cost?
This HEPU Water Pump Timing Belt Kit is available for £231.99. Water Pump Timing Belt Kit prices vary depending on brand, specifications, and vehicle compatibility. HEPU parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Water Pump Timing Belt Kit?
Regular inspection of your Water Pump Timing Belt Kit 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 Water Pump Timing Belt Kit?
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 Water Pump Timing Belt Kit fitted by a professional mechanic.
Can I use this part as a replacement for OE 078 121 004 L?
Yes, this HEPU Water Pump Timing Belt Kit is a direct replacement for OE part number 078 121 004 L. 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.
