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Hose - Lower Radiator, LATE (OEM) for B6-B7 S4

SKU: OEM-8E0121055AD
This is a brand new, OEM Lower Radiator Hose for your B6-B7 S4. This is the main hose on the driver's side of the car that connects to the bottom of the radiator and to the water pump.

NOTE ON FITMENT: For B6-S4s, there were two different versions of this lower radiator hose. On EARLY versions of this hose, the small 90 degree rubber hose that comes off the T connection and goes to the check valve before the hose that attaches to the the driver side auxiliary radiator will have a uniform size and have an outlet of 20mm where it connects to the check valve. The LATE versions of this hose will have a small 90 degree hose that has a "step-up" in it that goes from smaller at the T connection to a larger diameter of 25mm at the check valve connection.

This is the LATE hose with the 25mm check valve connection.

Most B6-S4s with VINs greater than or after 8E-5-023001 will have THIS HOSE. Most cars with a VIN less than or up to 8E-5-023000 will have a different version of this part (which we also sell). Audi does not list this split as being definitive so it is possible that you may have a hose different than the one identified by your VIN. The best thing to do is to look at the part number from the hose on your car. If you have a hose on your car with a part number of 8E0121055AD (or sometimes 8E0 121 055 AD) you have a LATE hose. Add this hose to your cart and proceed to checkout. If you have a hose on your car with a part number of 8E0121055L (or 8E0 121 055 L) you have an EARLY hose. Go back one section, select that hose, ad it to your cart, and proceed to checkout.

Don't forget to add coolant to your order!

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This product fits the following vehicles:
Make Model Chassis Engine
Audi S4 B7 (2005.5-2009) 4.2l V8 40v
Audi S4 B6 (2003-2005) 4.2l V8 40v
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Off-road Use

By Purchasing any Off-Road use ONLY products from JH Motorsports, Inc. I acknowledge and understand the following disclosure. (This notice is located at the bottom of the page description of affected products on our website.)

Vehicle Code § 27156:
(b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.
(c) No person shall install, sell, offer for sale, or advertise any device, apparatus, or mechanism intended for use with, or as a part of, a required motor vehicle pollution control device or system that alters or modifies the original design or performance of the motor vehicle pollution control device or system.

Health and Safety Code § 43000:
43001. The provisions of this part shall not apply to:
(a) Racing vehicles.

As the aforementioned code sections outline, it is against the law to operate or use a vehicle on public streets or highways with modified, altered, or disconnected motor vehicle pollution control devices. This may include but is not limited to, Evaporative Fuel Controls, Catalysts, DPF, PTOX, PCV Systems, Exhaust Gas Recirculation Systems, Oxygen Sensors, Thermostatic Air Cleaners, Air Intake Systems, Fuel Injectors, Regulators, Adjustable Cam Gears, ECU Programming, Mapping, or other Computer Modifications. Air Pumps, Air Injection, Timing, and any other Emission System Modification(s).

Purchaser acknowledges and certifies to JH Motorsports Inc., that Purchasers vehicle will only be used for racing applications or off road vehicle use only. Purchaser requests these modifications for the purpose of enhancing the vehicle for competitive Racing Applications and will not use this vehicle on public streets or highways. Purchaser agrees to indemnify JH Motorsports Inc., all employees, officers, owners, and subsidiaries for any civil or criminal liability arising out of use of Purchasers vehicle on public streets or highways as Purchaser has been duly notified of the laws and regulations regarding disconnecting, alteration, or modification of a vehicle’s pollution control devices. Purchaser understands and has been advised the driving of a vehicle on public streets or highways could result in criminal or civil penalties.

Prop 65

Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.

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