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Details
| Specification | Value |
|---|---|
| Brand | TOPRAN |
| Core Length [mm] | 275 mm |
| Core Width [mm] | 156 mm |
| Core Depth [mm] | 42 mm |
OE numbers (9)
Search by this OE number to find compatible parts
- AUDI—431 819 031
- AUDI—431 819 031A
- AUDI—431 819 031B
- AUDI—443 819 030
- AUDI—443 819 031
- AUDI—443 819 031A
- AUDI—443 819 031B
- AUDI—443 819 031C
- AUDI—443 819 031D
Where this part fits
Original-fit position for OE 443819030. The red ring marks where this part installs on the vehicle.
About this product
TOPRAN Heat Exchanger Interior Heating (103 705) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Left-/right-hand drive vehicles: Aluminium, Left-/right-hand drive vehicles: Steel, Cooling fins material: Steel, Core Length [mm]: 275 mm, Core Width [mm]: 156 mm — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. 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: 0010306052, 0010329, 00119, 002-60-01471 and 83 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 with tracked delivery and a 14-day money-back guarantee with 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 (87)
Show all 87 OE numbers
Heat Exchanger Interior Heating TOPRAN 103 705 — compatible car models
| Car models | AUDI: 100 C2 Saloon (431, 433, 434), 100 C3 Saloon (443, 444), 100 C4 Avant (4A5), 100 C4 Saloon (4A2), A6 C4 (4A2), A6 C4 Avant (4A5) |
|---|---|
| Engines | 1.6; 1.8; 2.0 E; 2.0 |
| Year of manufacture | 1976-1998 |
| Manufacturer article number (MPN) | 103 705 |
| OE part numbers | 431 819 031, 431 819 031A, 431 819 031B, 443 819 030, 443 819 031, 443 819 031A, 443 819 031B, 443 819 031C, 443 819 031D |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TOPRAN 103705 . Cooling fins material: 1. Core Depth [mm]: 42 mm. Core Length [mm]: 275 mm. Core Width [mm]: 156 mm. Left-/right-hand drive vehicles: 1. Left-/right-hand drive vehicles: 2
- 1x Heat Exchanger Interior Heating
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 Heat Exchanger Interior Heating compatible with my car?
This Heat Exchanger Interior Heating 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 TOPRAN Heat Exchanger Interior Heating have?
This TOPRAN Heat Exchanger Interior Heating has the following specifications: Left-/right-hand drive vehicles: 2; Left-/right-hand drive vehicles: 1; Cooling fins material: 1; Core Length [mm]: 275 mm; Core Width [mm]: 156 mm; Core Depth [mm]: 42 mm. Check the full specifications table above for complete details.
What OE part numbers does this Heat Exchanger Interior Heating replace?
This Heat Exchanger Interior Heating replaces OE part numbers: 431 819 031, 431 819 031A, 431 819 031B, 443 819 030, 443 819 031, 443 819 031A, 443 819 031B, 443 819 031C and 1 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Heat Exchanger Interior Heating cost?
This TOPRAN Heat Exchanger Interior Heating is available for £16.99. Heat Exchanger Interior Heating 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 Heat Exchanger Interior Heating?
Regular inspection of your Heat Exchanger Interior Heating 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 Heat Exchanger Interior Heating?
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 Heat Exchanger Interior Heating fitted by a professional mechanic.
Can I use this part as a replacement for OE 431 819 031?
Yes, this TOPRAN Heat Exchanger Interior Heating is a direct replacement for OE part number 431 819 031. 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.
