Name: Radiator Fan Clutch RIDEX 509C0010 OE Ref 4A0 121 350 B
Brand: RIDEX
SKU: RIDEX-509C0010
Price: 54.00 GBP
Availability: InStock
Rating: 4.8 (578 reviews)

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Radiator Fan Clutch RIDEX 509C0010 OE Ref 4A0 121 350 B RIDEX

Key Specification:

EAN: 4059191355365
Heating/Cooling: Fluid Friction Coupling
OEM Reference number: 4A0121350
Outer Diameter 1 [mm]: 138
PURPOSE GROUP: Radiator Fan

See Full Specification

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£ 54.00

£ 40.62 excl. VAT

In Stock

SKU:	RIDEX 509C0010
Brand	RIDEX

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Specification
Description
OEM Numbers
Compatibilities
Reviews

EAN

4059191355365

Heating/Cooling

Fluid Friction Coupling

OEM Reference number

4A0121350

Outer Diameter 1 [mm]

138

PURPOSE GROUP

Radiator Fan

Weight [kg]

0.814

Radiator Fan Clutch RIDEX 509C0010 OE Ref 4A0 121 350 B

Radiator Fan Clutch OE Ref 4A0 121 350 B – RIDEX – OEM 4A0121350

This Radiator Fan Clutch OE Ref 4A0 121 350 B is supplied by RIDEX as a replacement for OEM reference 4A0121350. It is intended for use in selected AUDI vehicles and designed to meet original equipment fit and function requirements.

The part is identified by manufacturer reference 509C0010 and EAN EAN: 4059191355365, allowing accurate identification and compatibility verification before installation. It is suitable for replacing worn, damaged, or non-functioning components where dependable operation is required.

Correct part selection is essential to ensure proper fitment. Please verify compatibility using the OEM reference number or the vehicle registration lookup tool before ordering.

Vehicle Compatibility

Compatible with selected AUDI models. Detailed compatibility information is available in the Compatibility section of this page.

If this part is not suitable for your vehicle, browse alternative options in our Engine Cooling System category.

Reference number(s) comparable with the original spare part number

AUDI 4A0 121 350 AUDI 4A0 121 350 B

OE reference number(s) comparable with the original spare part number

AUDI

AUDI 100 C4 Avant (4A5) From 12/1990 to 11/1994

2.3 E 4WD 09/1991-07/1994, 98 kw, 2309 ccm, 133 PS, Estate, Petrol , ENG: AAR

2.5 TDI 4WD 12/1990-07/1994, 85 kw, 2461 ccm, 115 PS, Estate, Diesel , ENG: AAT, ABP

2.3 E quattro 4WD 09/1991-07/1994, 98 kw, 2309 ccm, 133 PS, Estate, Petrol , ENG: AAR

S4 Turbo quattro 4WD 09/1991-07/1994, 169 kw, 2226 ccm, 230 PS, Estate, Petrol , ENG: AAN

2.4 D 4WD 12/1990-07/1994, 60 kw, 2370 ccm, 82 PS, Estate, Diesel , ENG: AAS

AUDI 100 C4 Saloon (4A2) From 12/1990 to 07/1994

S4 Turbo quattro 4WD 08/1991-07/1994, 169 kw, 2226 ccm, 230 PS, Saloon, Petrol , ENG: AAN

2.5 TDI 4WD 12/1990-07/1994, 85 kw, 2461 ccm, 115 PS, Saloon, Diesel , ENG: AAT, ABP

2.3 E quattro 4WD 12/1990-07/1994, 98 kw, 2309 ccm, 133 PS, Saloon, Petrol , ENG: AAR

2.3 E 4WD 12/1990-07/1994, 98 kw, 2309 ccm, 133 PS, Saloon, Petrol , ENG: AAR

2.4 D 4WD 12/1990-07/1994, 60 kw, 2370 ccm, 82 PS, Saloon, Diesel , ENG: AAS

AUDI A6 C4 (4A2) From 06/1994 to 10/1997

2.5 TDI 4WD 06/1994-10/1997, 85 kw, 2461 ccm, 116 PS, Saloon, Diesel , ENG: AAT

2.5 TDI 4WD 08/1994-10/1997, 103 kw, 2461 ccm, 140 PS, Saloon, Diesel , ENG: AEL

2.3 quattro 4WD 06/1994-12/1995, 98 kw, 2309 ccm, 133 PS, Saloon, Petrol , ENG: AAR

2.3 4WD 06/1994-12/1995, 98 kw, 2309 ccm, 133 PS, Saloon, Petrol , ENG: AAR

2.5 TDI quattro 4WD 10/1995-10/1997, 103 kw, 2461 ccm, 140 PS, Saloon, Diesel , ENG: AEL

S6 Turbo quattro 4WD 06/1994-10/1997, 169 kw, 2226 ccm, 230 PS, Saloon, Petrol , ENG: AAN

AUDI A6 C4 Avant (4A5) From 06/1994 to 12/1997

2.5 TDI quattro 4WD 07/1995-12/1997, 103 kw, 2461 ccm, 140 PS, Estate, Diesel , ENG: AEL

S6 Turbo quattro 4WD 06/1994-12/1997, 169 kw, 2226 ccm, 230 PS, Estate, Petrol , ENG: AAN

2.5 TDI 4WD 06/1994-12/1997, 85 kw, 2461 ccm, 116 PS, Estate, Diesel , ENG: AAT

2.5 TDI 4WD 08/1994-12/1997, 103 kw, 2461 ccm, 140 PS, Estate, Diesel , ENG: AEL

2.3 quattro 4WD 06/1994-12/1995, 98 kw, 2309 ccm, 133 PS, Estate, Petrol , ENG: AAR

2.3 4WD 06/1994-12/1995, 98 kw, 2309 ccm, 133 PS, Estate, Petrol , ENG: AAR

Berry
12 Nov, 2025
elderly car so really pleased that the part could be supplied :-) Correct part arrived swiftly - excellent - thank you
Edward & Susan
20 OCT, 2025
These guys were real helpful when I was looking for an EGR valve. Great communications and fast delivery, the valve did exactly as It was meant to do and it was a lot cheaper than everywhere else I looked. I'll be using eAuto Parts again. Top banana.
Charlie
27 AUG, 2025
eAuto Parts made me happy because it only took 2 minutes to order the part and at a very good price, also very quick delivery, will definitely deal with them again.
Adam Taylor
12 May, 2025
Quick enquiry response, easy buying and quick delivery. Quality of goods was good and fitted with no problem (Suzuki bonnet hinges.) recommended.
Helena Garcia
2 January, 2025
The correct part was rapidly identified and located, and was despatched promply to my chosen repairer in time for the work to be done on schedule. Very pleased with the service and will be using eAuto Parts again.