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Details
| Specification | Value |
|---|---|
| Brand | HEPU |
| MPN | ap8297 |
| Voltage [V] | 12 V |
| for OE number | 5Q0 121 599 AA |
| Operating Mode | EL |
OE/OEM numbers (3)
Search by this OE number to find compatible parts
- AUDI / SEAT / SKODA / VW—3QF121 599 C
- AUDI / SEAT / SKODA / VW—5Q0 121 599 AA
- AUDI / SEAT / SKODA / VW—5Q0 121 599 T
Where this part fits
Original-fit position for OE 3QF121599C. The red ring marks where this part installs on the vehicle.

About this product
The HEPU Auxiliary Water Pump Cooling Water Circuit (AP8297) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Voltage [V]: Zinc V, for OE number: 5Q0 121 599 AA, Operating Mode: Electric, Supplementary Article/Supplementary Info: 20, Supplementary Article/Info 2: 591. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit AUDI, CUPRA, SEAT, SKODA and 1 other makes models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 174434, 175439, 390063, 3QF121 599 C and 5 more. Matching these numbers confirms a like-for-like replacement with no loss of function. HEPU 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.
Suitable cars
Equivalent products (6)
Auxiliary Water Pump Cooling Water Circuit HEPU AP8297 — compatible car models
| Car models | AUDI: A1 (8X1, 8XK), A1 Sportback (8XA, 8XF), A1 Sportback (GBA), A3 (8V1, 8VK), A3 Convertible (8V7, 8VE), A3 Limousine (8VS, 8VM), A3 Limousine (8YS, 8YM), A3 Sportback (8VA, 8VF), A3 Sportback (8YA, 8YF), Q2 (GAB, GAG) (+4 more); CUPRA: FORMENTOR (KM7, KMP), LEON (KL1, KU1, KUG), LEON Sportstourer (KL8, KU8, KUD); SEAT: ALHAMBRA (710, 711), ATECA (KH7, KHP), LEON (5F1), LEON Hatchback Van (5F1), LEON (KL1, KLG), LEON SC (5F5), LEON Sportstourer (KL8, KLD), LEON ST (5F8), LEON ST Estate Van (5F8), TARRACO (KN2); SKODA: OCTAVIA III (5E3, NL3, NR3), OCTAVIA III Combi (5E5, 5E6), OCTAVIA IV Combi (NX5, PV5) |
|---|---|
| Engines | S1 quattro; 40 TFSI; 1.8 TFSI; 40 TFSI quattro; 2.0 TFSI quattro; 2.0 TSI; 2.0 TSI 4Drive; 1.8 TSI; 2.0 TFSI; 2.0 TFSI 4Drive; 2.0 TSI 4x4 |
| Year of manufacture | 2010-2024 |
| Manufacturer article number (MPN) | AP8297 |
| OE part numbers | 3QF121 599 C, 5Q0 121 599 AA, 5Q0 121 599 T |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
HEPU ap8297 . for OE number: 5Q0 121 599 AA. Operating Mode: EL. Supplementary Article/Info 2: 591. Supplementary Article/Supplementary Info: 20. Voltage [V]: 12 V
- 1x Auxiliary Water Pump Cooling Water Circuit
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 Auxiliary Water Pump Cooling Water Circuit compatible with my car?
This Auxiliary Water Pump Cooling Water Circuit fits AUDI, CUPRA, SEAT, SKODA, 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 HEPU Auxiliary Water Pump Cooling Water Circuit have?
This HEPU Auxiliary Water Pump Cooling Water Circuit has the following specifications: Voltage [V]: 12 V; for OE number: 5Q0 121 599 AA; Operating Mode: EL; Supplementary Article/Supplementary Info: 20; Supplementary Article/Info 2: 591. Check the full specifications table above for complete details.
What OE part numbers does this Auxiliary Water Pump Cooling Water Circuit replace?
This Auxiliary Water Pump Cooling Water Circuit replaces OE part numbers: 3QF121 599 C, 5Q0 121 599 AA, 5Q0 121 599 T. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Auxiliary Water Pump Cooling Water Circuit cost?
This HEPU Auxiliary Water Pump Cooling Water Circuit is available for £149.99. Auxiliary Water Pump Cooling Water Circuit 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 Auxiliary Water Pump Cooling Water Circuit?
Regular inspection of your Auxiliary Water Pump Cooling Water Circuit 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 Auxiliary Water Pump Cooling Water Circuit?
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 Auxiliary Water Pump Cooling Water Circuit fitted by a professional mechanic.
Can I use this part as a replacement for OE 3QF121 599 C?
Yes, this HEPU Auxiliary Water Pump Cooling Water Circuit is a direct replacement for OE part number 3QF121 599 C. 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.