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Details
| Specification | Value |
|---|---|
| Brand | SWAG |
| for OE number | 1J0 121 321 B |
| Weight [kg] | 0.16 kg |
| Thread Size | M63 x 3.0 |
| Opening Pressure [bar] | 1.5 bar |
OE numbers (6)
Search by this OE number to find compatible parts
- AUDI / VW—1C9 121 321
- AUDI / VW—1J0 121 321
- AUDI—1J0 121 321 A
- AUDI / VW—1J0 121 321 B
- AUDI / VW—8D0 121 403 C
- PORSCHE—955 106 447 20
Where this part fits
Original-fit position for OE 1J0121321A.
About this product
SWAG Cap Coolant Tank (30 91 4700) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — for OE number: 1J0 121 321 B, Weight [kg]: 0, Silicone kg, Thread Size: M63 x 3, 0, Colour: Rubber, Material: Plastic — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with AUDI, PORSCHE, VW 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: 00252, 002-60-01041, 00304, 03345 and 187 more. Matching these numbers confirms a like-for-like replacement with no loss of function. SWAG 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 SWAG
SWAG, part of the bilstein group based in Ennepetal, Germany, is a trusted independent aftermarket brand offering a wide range of quality replacement parts. SWAG specialises in engine components, suspension parts, steering elements, cooling system parts, and rubber-to-metal components. Manufactured to OE-equivalent standards with IATF 16949 certification, SWAG products deliver dependable performance at a competitive price point. As a sister brand to febi bilstein, SWAG benefits from shared German engineering expertise and rigorous quality control processes.
Suitable cars
Equivalent products (196)
Show all 196 OE numbers
Cap Coolant Tank SWAG 30 91 4700 — compatible car models
| Car models | AUDI: A2 (8Z0), A4 B5 (8D2), A4 B5 Avant (8D5), A4 B6 (8E2), A4 B6 Avant (8E5), A6 C4 (4A2), A6 C4 Avant (4A5), A6 C5 (4B2, 4B4), A6 C5 Avant (4B5, 4B6), ALLROAD C5 (4BH) (+4 more); PORSCHE: CAYENNE (9PA), PANAMERA (970); VW: BORA I (1J2), BORA Variant (1J6), FOX Hatchback (5Z1, 5Z3, 5Z4), GOLF IV (1J1), GOLF IV Van (1J1), GOLF IV Variant (1J5), GOLF VAN IV Variant (1J5), NEW BEETLE (9C1, 1C1), NEW BEETLE Convertible (1Y7), PASSAT B5 (3B2) (+4 more) |
|---|---|
| Engines | 1.4; 1.6; 1.8; 2.5 TDI quattro; 3.0 TDI quattro; 1.8 T; 3.0 TDI; 3.0 4S; 1.4 16V; 1.9 SDI; 1.2 |
| Year of manufacture | 1994-2017 |
| Manufacturer article number (MPN) | 30 91 4700 |
| OE part numbers | 1C9 121 321, 1J0 121 321, 1J0 121 321 A, 1J0 121 321 B, 8D0 121 403 C, 955 106 447 20 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
SWAG 30914700 . Colour: 5. for OE number: 1J0 121 321 B. Material: 6. Opening Pressure [bar]: 1,5 bar. Thread Size: M63 x 3,0. Weight [kg]: 0,16 kg
- 1x Cap Coolant Tank
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 4–8 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 Cap Coolant Tank compatible with my car?
This Cap Coolant Tank fits AUDI, PORSCHE, 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 SWAG Cap Coolant Tank have?
This SWAG Cap Coolant Tank has the following specifications: for OE number: 1J0 121 321 B; Weight [kg]: 0,16 kg; Thread Size: M63 x 3,0; Colour: 5; Material: 6; Opening Pressure [bar]: 1,5 bar. Check the full specifications table above for complete details.
What OE part numbers does this Cap Coolant Tank replace?
This Cap Coolant Tank replaces OE part numbers: 1C9 121 321, 1J0 121 321, 1J0 121 321 A, 1J0 121 321 B, 8D0 121 403 C, 955 106 447 20. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Cap Coolant Tank cost?
This SWAG Cap Coolant Tank is available for £8.99. Cap Coolant Tank prices vary depending on brand, specifications, and vehicle compatibility. SWAG parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Cap Coolant Tank?
Regular inspection of your Cap Coolant Tank 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 Cap Coolant Tank?
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 Cap Coolant Tank fitted by a professional mechanic.
Can I use this part as a replacement for OE 1C9 121 321?
Yes, this SWAG Cap Coolant Tank is a direct replacement for OE part number 1C9 121 321. 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.
