Thermostats & Parts
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Tube Assembly
Part Number: 4K0-121-400-J
Audi Other Names: Pipe
Replaces: 4k0121400e
Description: 2.0L, main, from 10/03/2022.
Backordered
Pipe
Part Number: 059-121-050-P
Audi Other Names: Tube
Replaces: 59121050q
Description: Diesel, lower, 2010-12. 3.0L.
Backordered
Thermostat Housing
Part Number: 04E-121-116-C
Audi Notes: Included with Water pump assembly.
Applications: 1.4L Hybrid.
Other Names: Housing
Description: A3. 1.4L.
Backordered
Engine Coolant Pipe O-Ring
Part Number: WHT-008-267
Audi Notes: Included with cross tube.
Other Names: Cross Tube O-Ring, Tube O-Ring, Seal Ring
Description: 22 x 3mm. Secondary, 22x3. 4.0L, 22x3. Main.
MSRP $7.00
$4.38
Water Feed Tube
Part Number: 4KE-819-928-N
Audi Other Names: Pipe
Replaces: 4ke819928h
Description: Center, # 6. Center, single charging port, # 5.
MSRP $166.64
$114.99
Thermostat Gasket
Part Number: 07D-121-091-E
Audi Notes: Included with thermostat.
Applications: 6.0L (V12).
Other Names: Gasket
Description: 6.0L, primary. A8.
MSRP $52.38
$31.43
Engine Coolant Pipe
Part Number: 4N0-145-637-A
Audi Other Names: Tube, Water Pipe
Description: 3.0L, with plug-in hybrid, auxiliary, #5.
Backordered
Water Pipe
Part Number: 06E-121-083-F
Audi Other Names: Cooling Pipe, Tube Assembly, Pipe
Replaces: 6e121083c
Description: 2012-15, return. Gas, return. 3.0L, hoses & pipes, 2010-2012. 3.0L, supercharger, 2010-12.
MSRP $240.00
$165.60
Return Hose
Part Number: 06L-121-492-AA
Audi Other Names: Engine Coolant Hose, Engine Coolant Pipe, Pipe
Replaces: 6l121492c, 6l121492e
Description: Turbocharger Cooling. Outlet. 2.0L 2016-18 rear, lower. Return hose.
MSRP $141.66
$97.75
Tube
Part Number: 85E-121-563
Audi Notes: Included with hose and tube assembly.
Other Names: Pipe
Description: Center, awd.
Backordered
Hose & Tube Assembly
Part Number: 4K0-819-342-J
Audi Applications: 2.0L.
Other Names: Hoses, Hose
Description: 2.0L, right, #2. A7 Sportback. Hose to control valve.
MSRP $64.55
$46.48
Connector Pipe
Part Number: 079-121-071-BS
Audi Other Names: Pipe
Description: 4.2 Liter Supply Upper. Pipe that is part of the Engine Cooling system.
Fits A8
4.2 Liter, Supply, Upper. 4.2L, Supply, Upper.
MSRP $106.67
$73.60
Lower Pipe
Part Number: 4G0-121-071-Q
Audi Other Names: Pipe
Description: 4.0L, main, supply. Without RS7, main, supply.
MSRP $118.99
$82.10
Connector Tube
Part Number: 8K0-121-071-J
Audi Other Names: Tube, Pipe
Replaces: 8k0121071g
Description: 3.0L, hoses & pipes, 2013-2016. Coupe, 3.0L, main. 3.0L, hoses & pipes, 2010-2012. Convertible, 3.0L.
MSRP $227.65
$157.08
Thermostat Unit
Part Number: 0P2-121-115-E
Audi Notes: Includes O-Ring. Includes Inner Seal. Includes Thermostat Gasket.
Applications: 4.0L COOLING SYSTEM.
Other Names: Thermostat, Thermostat Housing
Replaces: p2121115a, p2121115b, p2121115c, p2121115d
Description: 4.0L. SQ7. SQ8. Main, to 01/13/2025. S8. RS Q8. RS7 Sportback. RS6 Avant. A8 Quattro.
MSRP $217.66
$150.19
Backordered
Hose & Tube Assembly
Part Number: 4KE-145-947-S
Audi Other Names: Water Pipe
Replaces: 4ke145947g
Description: Right, # 4, to 02/14/2022. Right, # 4, from 02/14/2022.
MSRP $126.66
$87.40
MSRP $387.48
$267.36
MSRP $51.98
$31.19
MSRP $5.90
$3.69
Tube
Part Number: 06J-121-075-D
Audi Other Names: Connector Tube, Water Inlet Tube, Pipe
Replaces: 6j121075r
Description: Rear. 2009-13. 2009-2010 with awd, TT.
MSRP $173.32
$119.59
Engine Coolant Pipe O-Ring
Part Number: WHT-005-652
Audi Other Names: Seal Ring
Description: 17 x 3mm.
MSRP $3.16
$1.98
Engine Coolant Thermostat Housing Gasket
Part Number: 04L-121-119-B
Audi Other Names: Seal Ring
Description: O-Ring.
MSRP $5.57
$3.48
MSRP $176.64
$121.89
MSRP $50.58
$30.35
Water Pipe
Part Number: 059-121-075-CK
Audi Other Names: Tube Assembly, Pipe
Description: Diesel, lower, 2010-12. 3.0L.
Backordered
Thermostat
Part Number: 022-121-113
Audi Notes: Included with thermsotat unit.
Applications: 2.0L, 3.2L.
Description: 3.2L, feed. A3. 3.2l. TT. 3.2L, main.
MSRP $126.65
$87.39
Water Inlet Tube Seal
Part Number: N-902-753-02
Audi Notes: Included with pipe assembly. Included with Tube assembly. Included with connector tube.
Other Names: Tube Seal, Engine Coolant Pipe O-Ring, Pipe Assembly Seal, Water Manifold Seal, Connector Tube O-Ring, Tube Assembly O-Ring, Seal Ring
Replaces: n90275301
Description: 32 x 3mm. 2.0L. 3.0L.
MSRP $4.63
$2.90
Backordered
Thermostat Unit
Part Number: 079-121-115-BL
Audi Notes: Includes Thermostat Housing. Included with water pump assembly.
Applications: 4.0L- MAIN COOLING SYSTEM.
Other Names: Thermostat, Thermostat Housing
Replaces: 79121115bd
Description: A8, S8. S7, RS7. 4.0L, primary. S6. 4.0L, main. Without RS7, main.
MSRP $391.66
$270.25
Adapter Gasket
Part Number: 079-121-043-A
Audi Notes: Included with adapter.
Other Names: Gasket
Description: 4.0L, main, supply. Without RS7, main, supply. With RS7, front center.
MSRP $13.53
$8.46
Upper Pipe
Part Number: 0P2-121-075-J
Audi Other Names: Tube, Pipe
Replaces: p2121075e
Description: 4.0L, main, #2. 4.0L, to 05/23/2023. 4.0L, from 05/23/2023.
MSRP $194.98
$134.54
Backordered
Water Inlet Tube
Part Number: 079-121-071-CM
Audi Other Names: Lower Pipe, Pipe
Replaces: 79121071ck
Description: 4.0L, main, supply, rear. With RS7, vent lines. Without RS7, main, supply, rear.
MSRP $160.32
$110.62
Hose
Part Number: 1EA-121-057-P
Audi Notes: Included with hose and tube assembly.
Description: Rwd, right.
Backordered
Engine Coolant Pipe
Part Number: 4N0-121-085-B
Audi Other Names: Tube Assembly, Water Pipe
Description: 3.0L, with plug-in hybrid, heater hoses, rear.
Backordered
Breather Tube
Part Number: 8W0-121-081-EG
Audi Other Names: Breather
Description: Main, #1. 3.0L, 2018-19, #4, from 10/14/2019. Coupe, 3.0L, #4.
MSRP $75.00
$54.00
Vent Tube
Part Number: 4G0-121-081-BT
Audi Other Names: Vent Pipe, Tube
Description: Without RS7, main, supply, rear. 4.0L, main, supply, rear.
MSRP $44.78
$26.87
Backordered
Thermostat Housing
Part Number: 079-121-115-BG
Audi Notes: Includes Thermostat. Included with water pump assembly. Part cannot be reused/reinstalled.
Applications: 5.2L. 4.2L.
Other Names: Thermostat Unit, Thermostat
Replaces: 79121115aa, 79121115bb, 79121115bj, 79121115t
Description: R8. Rs 5. S5. A8. 4.2L, primary.
MSRP $320.00
$220.80
Thermostat Cover Seal
Part Number: WHT-000-863
Audi Applications: 3.6L.
Other Names: Gasket, Washer
Description: 3.6L, main. Q7.
MSRP $7.46
$4.66
Engine Coolant Pipe O-Ring
Part Number: N-904-650-03
Audi Notes: Included with lower pipe. Included with upper pipe. Included with upper hose. Included with outlet hose.
Other Names: Lower Pipe O-Ring, Upper Pipe O-Ring, Outlet Hose O-Ring, Upper Hose O-Ring, Lower Pipe Seal, Upper Pipe Seal, Outlet Hose Seal,...
Description: 23 x 2.6mm. 4.0L, main, return. With RS7, right front. Without RS7, main, return. 3.0L.
MSRP $3.10
$1.94
Water Pipe
Part Number: 4G0-121-485-BL
Audi Other Names: Pipe
Description: 2016-18, rear. 3.0L gas, rear.
Backordered
Hose Assembly
Part Number: 1EA-121-053-E
Audi Other Names: Water Hose
Replaces: 1ea121053d
Description: Awd, rear, to 10/30/2023.
MSRP $27.56
$17.23
Distributor O-Ring
Part Number: WHT-007-809
Audi Notes: Included with distributor.
Applications: 4.0L.
Other Names: Gasket, Seal Ring
Description: 4.0L, #3. Main, 80x4. RS6 Avant. To housing. RS7 Sportback.
MSRP $27.32
$17.08
Adapter Seal
Part Number: 0EN-901-219-A
Audi Notes: Included with adapter.
Other Names: Gasket
Description: Drive motor-rear.
MSRP $3.43
$2.56
Water Return Tube
Part Number: 4M8-121-662
Audi Other Names: Lower Pipe, Return Pipe, Pipe
Description: Alternator.
MSRP $174.65
$120.51
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