£7.99
In stock
81731EAN 8433819049588Coolant Cap 3RG 81731
Cap Coolant Tank 3RG 81731. Fits 9 car models (AUDI), 1997–2011. Replaces 1 OE number.
Your car
Does this fit your car?
Choose your car and we will check this part against the manufacturer's data.
In stockPrice incl. VAT
- Delivery in 4–8 working days.
- Delivery £5.99. Free from £50.00.
- 14-day money-back guarantee
- Earn 8 points on this item
Specification. From the manufacturer's data.
- Brand
- 3RG
- Height 1 [mm]
- 40 mm
- Outer Diameter [mm]
- 80 mm
- Opening Pressure [bar]
- 1.5 bar
- Category
- Cap Coolant Tank
- MPN
- 81731
- SKU
- 4598-81731
- GTIN / EAN
- 8433819049588
- What's included
- 1x Cap Coolant Tank
OE numbers. The originals this part replaces.
Numbers the vehicle makers and other brands use for this part. Only a confirmed OE number links to its own page; other brands' equivalents are under “Equivalent products”.
- AUDI8E0121321
Equivalent products. They fit in the same place.
7 available · 41 numbers In stock from £7.99 to £12.99.
£7.99
Last one! Only 1 left
£10.99
Only 3 left!
£11.99
In stock
.JPG&w=3840&q=75)
£12.99
Last one! Only 1 left
£8.99
Check availability
£18.99
Check availability
All 41 cross-reference numbers
Numbers other makers give for this part. They are aftermarket numbers, not the vehicle maker's OE numbers; a linked number is one we sell.
- ABAKUS 53027005
- AKRON-MALÒ 118020
- AKS DASIS 750388N
- ASHIKA 3300007
- AUTOMEGA 160105810
- BBR Automotive 26013457
- BGA CC3015
- BIRTH 8563
- BSG BSG90551002
- CALORSTAT by Vernet RC0002
- CAUTEX 954272
- FARE SA 2787
- FEBI BILSTEIN 40723
- FEBI BILSTEIN 30940723
- FIRST LINE FRC105
- GATES RC237
- HELLA 8MY376782464
- JAPANPARTS KH007
- JP GROUP 1114800500
- MAHLE CRB104000S
- MAPCO 33007
- MDR MRC4007
- Metalcaucho 3730
- METZGER AUTOTEILE 2140099
- MEYLE 1002380003
- MOTAQUIP VCR240
- ORIGINAL IMPERIUM 1705
- ORIGINAL IMPERIUM 33548
- ORIGINAL IMPERIUM 43019
- PEMEBLA JAPKH007
- QUINTON HAZELL FC513
- SERCORE 280371
- STC T403730
- TOPRAN 109345
- TRICLO 313327
- TRISCAN 861023
- TRUCKTEC AUTOMOTIVE 740041
- VAICO V100491
- VEMA 15917
- vika 11210089001
- WILMINK GROUP WG1795422
Compatible cars. AUDI, 9 models.
Matched from the manufacturer's data. Production years 1997–2011.
| Model | Engines | Years |
|---|---|---|
| AUDI9 models | ||
| AUDI A4 B6 (8E2) | 1.6 | 2000–2005 |
| AUDI A4 B6 Avant (8E5) | 1.6 | 2000–2005 |
| AUDI A4 B6 Convertible (8H7) | 1.8 T | 2002–2009 |
| AUDI A6 Allroad C6 (4FH) | 2.7 TDI quattro | 2006–2011 |
| AUDI A6 C5 (4B2, 4B4) | 1.8 | 1997–2005 |
| AUDI A6 C5 Avant (4B5, 4B6) | 1.8 | 1997–2006 |
All models (9)
| Model | Engines | Years |
|---|---|---|
| AUDI9 models | ||
| AUDI A6 C6 (4F2) | 2.0 TDI | 2004–2011 |
| AUDI A6 C6 Avant (4F5) | 2.0 TDI | 2004–2011 |
| AUDI A8 D3 (4E2, 4E8) | 2.8 FSI | 2002–2010 |
Always verify compatibility with your vehicle before ordering.
More about this part. Related categories and similar parts.
Related categories
Customers also bought
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
Related Guides
Expansion Tank Buying GuideCoolant loss and cracked tanks — how to spot a failing expansion tank, pressure cap types, and replacement guide.Fuel Tank Buying GuideRust, leaks, and fuel contamination — steel vs plastic fuel tanks, capacity specs, and replacement precautions.Brake Master Cylinder Buying GuideSpongy or sinking brake pedal? How to diagnose a failing brake master cylinder, bleed the system, and choose the right replacement.Brake Shoe Set Buying GuideRear drum brake shoes — lining materials, wear limits, self-adjusting mechanisms, and how to replace brake shoes safely.
Delivery and returns. No small print.
£5.99
Standard delivery
4–8 working days.
£50.00
Free delivery
Orders from £50.00
14 days
Returns
Money back if the part does not fit.
- Visa
- Mastercard
- PayPal
- Apple Pay
- Google Pay
- Klarna
Secure payments
Encrypted checkout
12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle. Delivery terms
