Audi BMW Mercedes-Benz Porsche Volkswagen Land Rover Sell Your Car

Audi BMW Mercedes-Benz Porsche Volkswagen Land Rover Sell Your Car

Parts › Audi › A8 › Heater Bypass Valve

Used OEM Audi A8 Heater Bypass Valve

Filters

MY VEHICLE: Audi A8

Filter Parts By

× Clear all filters

Category

Cooling / Heating / Climate (6)

Radiator / Coolant (6)

Condition

Used (6)

Part Type

ABS / Speed Sensor (13) ABS Computer / Module (9) ABS Pump (8) ABS Pump Mount / Bracket (3) AC Compressor Mount Bracket (4) AC Compressor Screw / Bolt (18) AC Compressor and Clutch (6) AC Condenser (5) AC Evaporator (6) AC Expansion Valve (6) AC Hoses / Lines and Fittings (31) AC Pressure Switch / Sensor (6) AC Receiver / Drier (1) Air / Coil Spring (6) Air Quality Sensor (5) Air Spring Acceleration Sensor (7) AirBag Computer / Module (10) AirBag Crash / Impact Sensor (17) Airbag Warning Light / Switch (1) Airbag Wire / Wiring Harness (11) Alarm / Theft Control Module (2) Alarm Horn / Siren (9) Alarm Switch (3) Alternator / Generator (2) Alternator / Starter Wiring Harness (5) Alternator Air Duct / Cooler (1) Alternator Bolt / Nut / Fastener (10) Alternator Mount Bracket (3) Ambient Light / Sun Sensor (5) Amp / Amplifier (13) Antenna Booster (7) Armrest / Arm Rest (30) Ashtray / Ash Tray (21) Audio Noise Suppressor / Capacitor (3) Axle / CV Shaft (5) Axle / CV Shaft Shield (8) BCM / Body Control Modules / Computers (8) Battery Cable (6) Battery Control Module / Computer (2) Battery Cover / Box (7) Battery Terminal / Junction Box (7) Blank / Dummy Switch (2) Blower Motor (5) Blower Motor Resistor (5) Body Trim Bolt / Screw Cap / Cover (14) Body Wire / Wiring Harness (14) Boost Control Valve / N75 / Diverter (6) Bowden Cable (17) Brake / ABS Pressure Sensor (1) Brake / Clutch Switch (6) Brake Booster (2) Brake Booster Pressure Sensor (2) Brake Caliper (14) Brake Caliper / Carrier Bolts / Fasteners (8) Brake Caliper Carrier / Mount Bracket (21) Brake Disc / Rotor / Drum (1) Brake Dust / Splash Shield (13) Brake Fluid Reservoir / Tank (10) Brake Hose / Line (2) Brake Master Cylinder (2) Brake Pad / Shoe (3) Brake Pedal (6) Brake Relay (1) Brake Vacuum Line / Hose (9) Brake Vacuum Pump (14) Bumper / Hood Emblem / Badge (3) Bumper Bolts (2) Bumper Grille (1) Bumper Mount Bracket (26) Bumper Reinforcement Bar / Bracket (10) Bumper Shock (4) Bumper Valance (1) CD / DVD Changer (7) CV Axle Flange Bolt (3) Cabin Air Filter Housing (5) Cam Shaft / Camshaft (36) Cam Shaft Bearing Cap (2) Camera Control Module (10) Camshaft Adjustment Solenoid / Gear (33) Camshaft Bolt (1) Camshaft Pulley / Gear (1) Camshaft Sensor (13) Cargo / Trunk Light (2) Cargo Tie Down Hooks (7) Center Console (3) Center Console Insert (2) Center Console Mount Bracket (2) Center Console Trim (22) Center Door Trim / Molding (6) Central Locking Pump (1) Charcoal Fuel Vapor Canister (7) Child Restraint / Hook Cover / Cap (5) Cigarette Lighter (10) Climate / Temp Control Unit (7) Climate Air Temp Sensor (11) Climate Air Vent / Duct (36) Climate Control Wire / Wiring Harness (8) Clock (2) Clock Spring (5) Coat Hanger / Hook (4) Comfort Control Module / Computer / CCM (7) Comfort Control Module Wire / Wiring Harness (2) Compact Spare Wheel / Tire (1) Computer / Module Mount Bracket (1) Control Arm Bushing (1) Coolant Flange (3) Coolant Hose / Pipe / Line (156) Coolant Reservoir / Tank (6) Coolant Temp Sensor / Thermal Switch (13) Cooling Fan Misc (2) Cowl / Firewall Cover (2) Crankcase / PCV Vent Valve (10) Crankshaft (10) Crankshaft Bolt (6) Crankshaft Pulley / Harmonic Balancer (6) Crankshaft Sensor (5) Crankshaft Shim (2) Cruise Control Module / Computer (7) Cup Holder (4) Cylinder Head Bolt (4) Cylinder Head Gasket (1) DEF Pump / Injector (1) Dash Bracket / Mount (3) Dash Trim (33) Dash Wire / Wiring Harness (13) Dashboard (1) Dead Pedal / Foot Rest (1) Deck Lid / Trunk / Hatch (1) Defrost Switch (2) Diagnostic / CAN Bus / Gateway Computer / Module (8) Differential (3) Differential Control Module (2) Differential Mount Bracket (1) Dome / Map Light (13) Door / Hatch Sun Shade and Clips (26) Door Brake / Check Rod / Hinge (8) Door Control / Door Light Unit / Module (15) Door Glass (12) Door Latch (1) Door Light (18) Door Lock Actuator (40) Door Mount / Bracket (3) Door Panel (29) Door Panel Storage Area (16) Door Shell / Skin (1) Door Sill / Scuff Panel (10) Door Trim (73) Door Weather Stripping / Seal (20) Door Wire / Wiring Harness (33) Drive Belt Tensioner (3) Drive Select Switch (1) Driveshaft / Propeller Shaft (7) ECU / Engine Control Module Housing / Cover (5) EGR Valve / Hose / Line (32) EGT / Exhaust Gas Temp Sensor (4) ESP / DTC / Traction Control Switch (6) ESP Computer / Module (1) Electric Charging Switch / Module (1) Electric Cooling Fan (21) Electric Cooling Fan Module / Relay (1) Electric Fan Assembly (5) Engine / Motor Mount (10) Engine / Motor Mount Bracket (36) Engine Air Filter Box (15) Engine Air Intake Duct (23) Engine Balancer Shaft (9) Engine Bolt / Nut / Fastener (41) Engine Control Module / ECM / ECU / DME (8) Engine Cooler Pipe / Line (2) Engine Cylinder Head and Parts (38) Engine Intake Air Temp Sensor (4) Engine Long Block (2) Engine Oil Cap (16) Engine Oil Cooler (11) Engine Oil Dipstick (10) Engine Oil Filter Housing (15) Engine Oil Level Sensor (8) Engine Oil Pan (13) Engine Oil Pump (30) Engine Plastic Cover (8) Engine Sealing Plate / Cover (13) Engine Short Block (11) Engine Start / Stop Switch (3) Engine Timing / Cam Solenoid (9) Engine Valve / Cylinder Head Cover (9) Engine Wire / Wiring Harness (24) Evap Hoses / Lines (13) Exhaust Hardware / Clamp (9) Exhaust Manifold (20) Exhaust Motor / Servo (3) Exhaust Mount Bracket / Hanger (8) Exhaust Pipe (12) Exterior B Pillar Trim / Cover (5) Exterior Bolt / Nut / Fastener (6) Exterior Door / Window Trim (11) Exterior Door Handle (58) Fender Liner (4) Fender Mount / Bracket (9) Fender Trim / Flare (4) First Aid Kit (4) Flexplate (9) Floor Mats and Carpet (6) Flywheel (1) Flywheel / Flexplate Bolt (5) Fog Light / Lamp (2) Fog Light Bulb (1) Fog Light Switch (9) Fragrance / Aroma System (1) Frame Brace / Support Bracket (8) Front Bumper Cover (3) Front Seat (16) Fuel / Gas Cap (4) Fuel Filter (1) Fuel Gauge Level Sensor / Sending Unit (3) Fuel Injector (30) Fuel Line (41) Fuel Pressure Sensor (14) Fuel Pump (11) Fuel Pump Delivery Computer / Module (4) Fuel Pump Relay (2) Fuel Rail (32) Fuse / Relay Box (21) Fuse Box Cover (7) Gas / Fuel Door Lock Actuator (11) Gas / Fuel Filler Door (4) Gas Pedal / Accelerator Module (6) Glove Box (10) Glove Box Strut / Actuator (2) Glove Box Switch (1) Glow Plug (2) Grab Handle (8) HVAC Box Parts and Servos (7) Hatch Lift Pump / Motor Module (5) Hazard Switch (7) Head / Heads Up Display / HUD (2) Headlight / Head Lamp / Light (10) Headlight / Suspension Leveling Sensor (11) Headlight Ballast / Igniter (11) Headlight Bulb (2) Headlight Bulb Cover / Cap (4) Headlight Control Module / Computer (12) Headlight Mount Bracket (1) Headlight Switch (7) Headlight Washer / Sprayer Jet (3) Headlight Washer Cap / Cover (7) Headlight Washer Pump (3) Headliner / Roof Trim (6) Headrest (13) Heat Shield (5) Heated Seat Switch (3) Heater Bypass Valve (6) Heater Core (5) Heater Core Hose (5) High Pressure Fuel Pump / HPFP (14) Homelink / Garage Door Module (9) Hood (3) Hood Grille (1) Hood Hinge (9) Hood Insulation Blanket (5) Hood Latch Release Cable (3) Hood Latch Release Lever / Switch (2) Hood Shock / Strut (3) Hood Stop / Adjustment Bumper (5) Hood Weather Stripping / Seal (2) Horn (9) Humidity Sensor (2) Idler Pulley (3) Ignition Coil / Pack (20) Ignition Control Module / Amplifier / ICM (1) Ignition Switch (4) Ignition Switch w/ Key / Cylinder (6) Illumination / Dimmer Switch (4) Instrument Cluster / Speedometer (18) Instrument Cluster Trim (3) Intake Manifold and Parts (40) Intake Valve (2) Intercooler Air Guide Duct (1) Interior Bolt / Screw Cap / Cover (12) Interior Door Handle (22) Interior Fasteners / Clips (7) Interior Light (24) Interior Parking Brake Handle (1) Intermittent Wiper Control Module / Relay (2) Jack (4) Kessy / Keyless Entry Antenna (9) Key / Key Fob (3) Kick Panel (2) Kickdown Pedal Switch (1) Knee AirBag (1) Knee Panel (3) Knock Sensor (14) LCD Screen / Info Display (4) Lane / Park Assist Camera (6) Lane Change Assist Module / Computer (5) Lane Change Assist Switch (6) Leak Detection Pump / LDP (12) License Plate Light (7) License Plate Mount / Bracket (2) Light / Headlight Wire / Wiring Harness (3) Light / Lamp Relay (7) Lock / Unlock Switch (8) Lower Control Arm (15) Lower Door Molding (10) Lower Hood Latch (5) Lower Pillar (8) Lug Nut Covers (6) Lug Nuts / Bolts (4) MAF / Mass Air Flow Sensor / Meter (3) MAP / Intake Manifold Pressure Sensor (9) MMI Center Control Unit (7) MMI Control Module / Computer (20) Microphone (3) Mirror Control Module (1) Mirror Switch (6) Misc Connector / Plug (47) Motion Detector / Sensor (2) Mud Flap / Spoiler (1) Muffler (1) Multifunction Relay (20) Music Interface Cable (5) Navigation / NAV Unit (8) Navigation Wire / Wiring Harness (6) Night Vision Control Module (1) Oil Pressure Sensor (23) Oil Sump Windage Tray (10) Onboard Power Supply Control Module / Unit (16) Other / Misc Wire / Wiring Harness (118) Other Relay (17) Owners Manual (3) Oxygen / O2 Sensor (43) Park Assist Sensor (18) Park Assist Switch (6) Parking Aid / Assist Control Module / Computer (11) Parking Brake Cable (4) Parking Brake Computer / Module (11) Parking Brake Mount Bracket (2) Parking Brake Switch (2) Particulate / DPF Sensor (1) Piston / Connecting Rod (27) Power Outlet (14) Power Steering Gear / Rack (3) Power Steering Hose / Line / Pipe (12) Power Steering Pump (2) Power Steering Pump Bracket (2) Power Steering Pump Pulley (3) Power Steering Reservoir (3) Power Steering Screw / Bolt (1) Power Steering Wiring Harness (1) Purge Valve (8) Radiator (2) Radiator / Core Support Mount Bracket (6) Radiator Air Guide / Duct (5) Radiator Coolant Hose (15) Radiator Holding Clip / Pin / Bracket (14) Radio / Stereo (1) Radio / Stereo / Amplifier Wire / Wiring Harness (20) Radio Tuner Receiver Module / Head Unit (4) Rain Sensor (6) Rain Tray / Water Deflector (4) Rear Bumper Cover (3) Rear Deck Panel (7) Rear Seat (14) Rear Seat Panel / Net (6) Rear View Mirror (9) Rocker Arm (1) Roof Antenna / Shark Fin (4) Roof Curtain AirBag (1) Roof Weather Stripping / Seal (1) Safety / Warning / Road Triangle (2) Satellite Radio Module / Computer (13) Seat / Memory Control Module / Computer (4) Seat Belts (17) Seat Buckles / Receivers (13) Seat Cooling Fan (2) Seat Fasteners / Clips (1) Seat Light (5) Seat Lumbar Assembly (2) Seat Memory Switch (8) Seat Motor (33) Seat Mount / Bracket (2) Seat Occupant Detection Module / Sensor (7) Seat Rail / Frame (7) Seat Storage Drawer (1) Seat Switch (27) Seat Trim (39) Seat Ventilation Module / Computer (1) Seat Wire / Wiring Harness (10) Secondary Air Pump (9) Secondary Air Pump Lines / Hoses (12) Servotronic Relay (2) Shift Cable / Linkage (6) Shifter Assembly (13) Shifter Display Unit (5) Shifter Knob / Boot (3) Side Marker Lights / Reflectors (8) Side Skirt / Rocker Panel (3) Side Skirt Mount Bracket (3) Side View Mirror (31) Ski Bag (3) Sound Absorber (20) Sound Generator (1) Spare Tire Air Compressor (1) Spare Tire Tie Down (4) Speaker / Subwoofer (47) Speaker Grille / Cover (37) Spindle / Knuckle (7) Stabilizer / Sway / Track Bar (6) Starter (10) Starter Bolt / Nut / Fastener (1) Starter Relay (1) Steering Angle Sensor (1) Steering Column (8) Steering Column Adjustment Lever / Switch (6) Steering Column Control Module (10) Steering Column Trim (6) Steering Tie Rod (13) Steering Wheel (20) Steering Wheel AirBag (13) Steering Wheel Relay / Module (3) Steering Wheel Switch / Button (41) Storage Tray / Card / Coin Holder (5) Strut / Shock Absorber (9) Strut / Shock Mount / Bushing (15) Strut Tower Brace (2) Sub Frame Mount / Bracket (2) SubFrame / Sub Frame (2) Suction Pump (2) Sun Roof / Glass (3) Sun Roof Shade / Sunshade (6) Sun Roof Switch (2) Sun Shade Switch (9) Sun Visor and Components (18) Sunroof / Sun Roof Control Module (5) Sunroof / Sun Roof Motor (7) Supercharger (7) Suspension Air Compressor (3) Suspension Air Compressor Bracket (1) Suspension Air Tank (3) Suspension Bolt / Nut / Fastener (16) Suspension Computer / Control Module / Air Ride (12) Suspension Line / Hose / Pipe (1) Sway / Stabilizer Bar End Link (4) Sway / Stabilizer Bar Mount / Bushing (1) Tail Light / Lamp (21) Tail Light Bulb (1) Tail Light Wire / Wiring Harness (20) Telephone / Telematics Control Module / Computer (15) Thermostat (9) Thermostat Housing (8) Third Brake Light (3) Throttle Body (11) Tie Rod Boot / Bellow (6) Timing Belt / Chain Covers (18) Timing Belt / Chain Tensioner (22) Timing Chain Guide / Rail (8) Timing Gear / Pulley (21) Tire Pressure / TPMS Sensor (7) Tire Pressure Monitoring Computer / Module (1) Tools (6) Torque Converter (7) Tow / Towing Hook (2) Tow Hook Cover / Cap (1) Trailer Control Module (1) Transfer Case / Box (2) Transmission (1) Transmission Axle Flange (6) Transmission Cooler Line / Pipe (17) Transmission Gears and Cylinders (1) Transmission Mount (11) Transmission Mount Bracket (22) Transmission Oil Cooler (7) Transmission Oil Pan (4) Transmission Screw / Bolt / Fastener (6) Transmission Tail Shaft (2) Transmission Wire / Wiring Harness (3) Trunk / Hatch Access Panel (2) Trunk / Hatch Cargo Cover (1) Trunk / Hatch Emblem / Badge (10) Trunk / Hatch Hinge (2) Trunk / Hatch Lift Motor / Pump (4) Trunk / Hatch Module (7) Trunk / Hatch Shock / Strut / Spring (2) Trunk / Hatch Stop / Adjustment (7) Trunk / Hatch Switch (8) Trunk / Hatch Trim (6) Trunk Latch (12) Trunk Latch Cover (3) Trunk Latch Release Cable (3) Trunk Lock Actuator (6) Trunk Mat / Carpet Spare Cover (4) Trunk Release Switch / Handle (14) Trunk Weather Stripping / Seal (1) Turbo / Supercharger Intercooler (4) Turbo Mount / Bracket (10) Turbocharger (13) Turbocharger Coolant Line (10) Turbocharger Gasket (1) Turbocharger Intercooler Hose (9) Turbocharger Oil Line (8) Turbocharger Wastegate / Actuator (6) Turbocharger Wastegate / Vacuum Lines (1) USB Port / Connector (1) Underbody / Under Panel Mount Fastener (5) Upper Control Arm (10) Upper Hood Latch (3) Upper Pillar (6) VSS / Transmission Speed Sensor (1) Vacuum / Crankcase Breather Hose / Line (29) Vacuum Solenoid Valve (12) Vacuum Tank / Reservoir (2) Valet Switch (2) Valve Body / Mechatronic (5) Vanity / Makeup Mirror (1) Voltage Stabilizer Module (1) Washer Hose (5) Water / Coolant Pump (30) Water Drain Hose / Line (2) Water Pump Mount Bracket (4) Wheel Bearing (11) Wheel Center Caps (5) Wheels / Rims (6) Window Motor (17) Window Regulator (11) Window Switch (10) Windshield Sprayer / Nozzle (26) Windshield Trim (4) Windshield Washer Pump (7) Windshield Washer Tank / Reservoir (9) Windshield Wiper Screw / Nut Cap (4) Wiper / Turn Signal / Cruise Stalks / Switch (12) Wiper Arm (5) Wiper Motor (2) Wiper Transmission (6) Wiring Organizer / Mount Bracket (7) YAW / ESP Sensor (5)

Items 1-6 of 6

Results

Coolant / Heater Bypass Solenoid Valve 4H0121670A

Coolant / Heater Bypass Solenoid Valve

Starting at $18.99

Fits 2011–2026 Audi & Porsche

OEM: 4H0121670A

Coolant Regulating Valve 059121737R

Coolant Regulating Valve

Fits 2010–2018 Audi, Porsche + more

OEM: 059121737R

Coolant Valve 06M121678F

Coolant Valve

Fits 2017–2024 Audi & Porsche

OEM: 06M121678F

Heater Control Valve 4H0121670

Heater Control Valve

Fits 2011–2024 Audi & Porsche

Heater Control Valve Unit 4H0121671D

Heater Control Valve Unit

Starting at $9.49

Fits 2010–2025 Audi, Porsche + more

OEM: 4H0121671D Porsche: PAB12167100

Heater Control Valve Unit 4H0121671B

Heater Control Valve Unit

Fits 2010–2024 Audi, Porsche + more

OEM: 4H0121671B

Shop Heater Bypass Valve by Year

2014 5 parts 2015 5 parts 2016 5 parts 2019 5 parts 2020 5 parts 2011 4 parts 2012 4 parts 2013 4 parts 2017 4 parts 2018 4 parts 2021 4 parts

Shop Audi A8 by Year

2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2002 2001 2000 1999 1998 1997

★ eBay Top Rated · 100,000+ positive ratings · Hundreds of 5★ Google reviews · 400,000+ parts shipped · Family-run since 2011 · Free shipping & 30-day returns Most items ship free to the lower 48 and include 30-day returns. Oversized freight items ship at a flat rate; as-is clearance items are final sale.

Company

About
Contact
Sell Your Car

Customer Service

My Account
Warranty & Returns

Visit Us

127 6th St S
Waverly, MN 55390

Mon–Thu: 8am–5pm CT
Fri: 8am–2pm CT

Popular Parts

Audi Coolant Hose / Pipe / Line
Audi Door Trim
Audi Other / Misc Wire / Wiring Harness
BMW Door Trim
Porsche Coolant Hose / Pipe / Line
Volkswagen Coolant Hose / Pipe / Line
Audi Door Weather Stripping / Seal
Audi Door Wire / Wiring Harness
Audi Dash Trim
BMW Coolant Hose / Pipe / Line
Audi Seat Trim
Volkswagen Door Trim

© 2010–present Wolf Auto LLC · Not affiliated with any OEM