How to properly measure and adjust Exhaust Valve and Intake Valve clearances when replacing lifters in a vehicle on Mazda 3?

Take off the battery cover. Disconnect the cable from the negative battery terminal. Remove all of the spark plugs. Loosen the right front wheel lug nuts. Raise the front of the vehicle and support it securely on jack stands. Then remove the wheel and the fender splash shield. With a wrench or a socket on the crankshaft pulley bolt, rotate the crankshaft in the clockwise direction, checking each lifter when its camshaft lobe is straight up, i.e. the measurement is taken between the base circle of the camshaft lobe and the top of the lifter with feeler gauges measuring the clearances. The distance between each cam's lob and its respective lifter must be measured and notes carefully recorded for each lifter's measurement. Should any measurement fall outside the recommended clearances, remove the camshafts and replace the out-of-spec lifters. New lifters of various thicknesses are available to make the valve clearances correct. Each is marked with a number that indicates thickness. Specifically, only the numbers after the decimal are relevant: for example, a "0.650" marking refers to an actual thickness of 3.650 mm. The desired thickness of the new lifters is determined by adding the thickness of the original lifter to the measured clearance. From this figure subtract the midrange for the ideal clearance. This will give the proper lifter thickness to order. Not every thickness is available so pick the closest. Following the installation of the camshafts and timing chain, one should recheck the valve clearances. Moreover, the procedure for fitting the timing chain is the reverse of removal. Subsequently, run the engine, and check for oil leaks.

How to Check and Adjust Exhaust Valve and Intake Valve Clearances on Mazda 6?

These steps are applicable to I-4 engines and 3.7L V6 engines. Start by removing the negative battery cable. After that, isolate and disconnect all of the spark plugs and remove the valve cover. After loosening the right front wheel lug nuts, raising the front of the vehicle, securely supporting it on jackstands, remove the wheel and fender splash shield. By means of a wrench or a socket on the bolt on the crankshaft pulley, rotate the crankshaft clockwise. Check each lifter with the camshaft lobe straight above it. The measurement must be between the base circle of the camshaft lobe and the top of the lifter. Feeler gauges must be used to measure the clearances. The distance between each camshaft lobe and the lifter must be checked. The measurements recorded for each lifter must be noted down carefully. You must remove the camshafts and any out-of-spec lifters if any measurement is outside the recommended clearance. New lift designs can be supplied with a range of thicknesses to correct the valve clearances. Each design is marked with a thickness number. It is important to only consider the number after the decimal point. For example, if a design is marked "0.650" then this refers to a thickness of 3.650 mm. To calculate the thickness of the new lifters. Take the thickness of the original lifter and add it to the measured clearance. Then, minus the midrange figure for the ideal clearance. This will give you the correct lifter thickness to order. Note that all thicknesses are not available, so its best to take the closest to what you need. After installation of camshafts and timing chain check valve clearance again. Reinstall the remaining part in reverse order and run the engine to check for leaks.

Genuine Mazda Exhaust Valve

Exhaust Muffler Valve

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35 Exhaust Valves found

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Mazda Exhaust Valve Part Number: 1F24-12-121
$16.50 MSRP: $22.00
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Product Specifications
- Other Name: Valve, Exhaust
- Replaces: 1F20-12-121, L503-12-121, LF01-12-121, ZZC3-12-121A, ZZC3-12-121
Fits the following Mazda Models:
- 6 | 2003-2010 | Mazdaspeed, i | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
- B2300 | 2001-2009 | Base, SE, SX | 4 Cyl 2.3 L GAS
- Tribute | 2008-2011, 2005-2006 | Hybrid, i | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS
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Mazda Exhaust Valve Part Number: PYFA-12-121
$13.11 MSRP: $17.49
You Save: $4.38 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- 3 | 2019-2024 | 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.5 L GAS
- 6 | 2018-2021 | Sport, Touring | 4 Cyl 2.5 L GAS
- CX-30 | 2023-2024, 2020-2021 | 2.5 S, 2.5 S Carbon Edition, Base, Preferred, Premium, Select | 4 Cyl 2.5 L GAS
- CX-5 | 2018-2024 | 2.5 S, 2.5 S Carbon Edition, Carbon Edition, Grand Touring, Sport, Touring | 4 Cyl 2.5 L GAS
- CX-50 | 2023-2025 | 2.5 S | 4 Cyl 2.5 L GAS
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Mazda Exhaust Valve Part Number: PE27-12-121
$14.06 MSRP: $18.76
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- 3 | 2021-2022 | 2.0 | 4 Cyl 2.0 L GAS
- CX-3 | 2019-2020 | Grand Touring, Sport, Touring | 4 Cyl 2.0 L GAS
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Mazda Exhaust Valve Part Number: PY12-12-121
$15.60 MSRP: $20.80
You Save: $5.20 (25%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- 3 | 2019-2024 | 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.5 L GAS
- 6 | 2018-2021 | Sport, Touring | 4 Cyl 2.5 L GAS
- CX-30 | 2020-2022 | 2.5 S, 2.5 S Carbon Edition, Base, Preferred, Premium, Select | 4 Cyl 2.5 L GAS
- CX-70 | 2025 | PHEV | 4 Cyl 2.5 L PLUG-IN HYBRID EV-GAS (PHEV)
- CX-90 | 2024-2025 | PHEV | 4 Cyl 2.5 L PLUG-IN HYBRID EV-GAS (PHEV)
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Mazda Exhaust Valve Part Number: PE7W-12-121
$16.45 MSRP: $21.94
You Save: $5.49 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- 3 | 2014-2018 | I Sport, I Touring, Sport, Touring, i Grand Touring, i SV | 4 Cyl 2.0 L GAS
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Mazda Exhaust Valve Part Number: PE31-12-121
$16.96 MSRP: $22.62
You Save: $5.66 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- MX-5 Miata | 2019-2024 | 100th Anniversary Special Edition, Club, Grand Touring, RF 100th Anniversary Special Edition, RF Club, RF GT, RF Grand Touring, Sport | 4 Cyl 2.0 L GAS
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Mazda Exhaust Valve Part Number: 1F22-12-121A
$17.45 MSRP: $23.27
You Save: $5.82 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
- Replaces: 1F22-12-121
Fits the following Mazda Models:
- B4000 | 2001-2009 | Base, DS, SE | 6 Cyl 4.0 L GAS
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Mazda Exhaust Valve Part Number: ZY01-12-121B
$18.06 MSRP: $24.09
You Save: $6.03 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- 2 | 2011-2014 | Sport, Touring | 4 Cyl 1.5 L GAS
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Mazda Exhaust Valve Part Number: LF02-12-121F
$21.50 MSRP: $28.67
You Save: $7.17 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
- Replaces: LF02-12-121A, LF02-12-121E, LF9G-12-121, LF02-12-121, LF02-12-121B, LF02-12-121C
Fits the following Mazda Models:
- 3 | 2004-2013 | Mazdaspeed, i | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS
- 5 | 2006-2010 | Grand Touring, Sport, Touring | 4 Cyl 2.3 L GAS
- MX-5 Miata | 2006-2015 | 25th Anniversary Edition, Base, Club, Club Spec, Grand Touring, SV, Special Edition, Sport, Touring | 4 Cyl 2.0 L GAS
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Mazda Exhaust Valve Part Number: FS01-12-121B
$21.54 MSRP: $28.72
You Save: $7.18 (25%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- 626 | 1993-2002 | DX, ES, LX | 4 Cyl 2.0 L GAS
- MX-6 | 1993-1997 | Base | 4 Cyl 2.0 L GAS
- Protege | 1999-2000 | ES | 4 Cyl 1.8 L GAS
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Mazda Exhaust Valve Part Number: ZZD2-12-121
$22.35 MSRP: $29.81
You Save: $7.46 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- Tribute | 2010-2011 | S | 6 Cyl 3.0 L FLEX
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Mazda Exhaust Valve Part Number: PY8W-12-121
$22.84 MSRP: $30.46
You Save: $7.62 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- 3 | 2021-2024 | 2.5 Carbon Turbo, 2.5 Turbo, 2.5 Turbo Premium Plus | 4 Cyl 2.5 L GAS
- 6 | 2018-2021 | Carbon Edition, Grand Touring, Grand Touring Reserve, Signature | 4 Cyl 2.5 L GAS
- CX-30 | 2021-2024 | 2.5 Carbon Turbo, 2.5 Turbo | 4 Cyl 2.5 L GAS
- CX-5 | 2019-2024 | 2.5 Turbo, 2.5 Turbo Signature, Carbon Edition Turbo, Grand Touring Reserve, Signature | 4 Cyl 2.5 L GAS
- CX-50 | 2023-2025 | 2.5 Turbo | 4 Cyl 2.5 L GAS
- CX-9 | 2016-2023 | Carbon Edition, Grand Touring, Signature, Sport, Touring, Touring Plus | 4 Cyl 2.5 L GAS
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Mazda Exhaust Valve Part Number: ZZC1-12-121
$28.25 MSRP: $37.67
You Save: $9.42 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
- Replaces: AJ03-12-121
Fits the following Mazda Models:
- 6 | 2003-2008 | S | 6 Cyl 3.0 L GAS
- MPV | 2002-2006 | ES, LX, LX-SV | 6 Cyl 3.0 L GAS
- Tribute | 2008-2009, 2001-2006 | DX, ES, LX, S | 6 Cyl 3.0 L GAS
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Mazda Exhaust Valve Part Number: YF09-12-121
$34.03 MSRP: $45.38
You Save: $11.35 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- Tribute | 2001-2004 | DX | 4 Cyl 2.0 L GAS
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Mazda Valve, Exhaust Part Number: CWA1-12-121
$37.74 MSRP: $50.33
You Save: $12.59 (26%)
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Product Specifications
- Other Name: VALVE,EXHAUST; Exhaust Valve
Fits the following Mazda Models:
- CX-50 | 2025
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Mazda Exhaust Valve Part Number: BP6F-12-121
$39.36 MSRP: $52.50
You Save: $13.14 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- Miata | 2002-2005 | Base, LS, Mazdaspeed, SE, Shinsen | 4 Cyl 1.8 L GAS
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Mazda Exhaust Valve Part Number: BP4W-12-121
$40.18 MSRP: $53.57
You Save: $13.39 (25%)
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Product Specifications
- Other Name: Valve, Exhaust
- Replaces: BP2Y-12-121
Fits the following Mazda Models:
- Miata | 1999-2002 | 10th Anniversary, Base, LS, SE | 4 Cyl 1.8 L GAS
- Protege | 1997-1998 | ES | 4 Cyl 1.8 L GAS
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Mazda Exhaust Valve Part Number: BP05-12-121A
$41.19 MSRP: $54.93
You Save: $13.74 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- Miata | 1994-1997 | Base, M Edition, STO | 4 Cyl 1.8 L GAS
- Protege | 1990-1996 | 4WD, Base, DX, ES, LX, SE | 4 Cyl 1.8 L GAS
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Mazda Exhaust Valve Part Number: B63012121
$45.13 MSRP: $60.18
You Save: $15.05 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
Fits the following Mazda Models:
- 323 | 1991-1994, 1986 | Base, SE | 4 Cyl 1.6 L GAS
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Mazda Exhaust Valve Part Number: FS05-12-121B
$45.35 MSRP: $60.48
You Save: $15.13 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
- Replaces: FS7N-12-121
Fits the following Mazda Models:
- Protege | 2001-2003 | DX, ES, LX, MP3, Mazdaspeed | 4 Cyl 2.0 L GAS
- Protege5 | 2002-2003 | Base | 4 Cyl 2.0 L GAS

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1-20 of 35 Results

Mazda Exhaust Valve

The hot gases get quickly expelled from the combustion chamber by the Mazda Exhaust Valve to enable the next power stroke with the engine breathing freely and protecting the crucial parts from excessive heat. Mazda vehicles develop a reputation for doing well on the road in addition to KODO styling, which is efficient for fuel consumption and emits less. Motorists delight in the traction offered by i-ACTIV all-wheel drive and appreciate how i-ACTIVSENSE features monitor the road and alert them to potential dangers. Consequently, the trip can be more relaxed and safer. Every Mazda model boasts quality construction throughout, plus a cabin that cocoons occupants with easy-to-use controls and seating. This engenders a bond between machine and driver that many indeed try to match, but few succeed in doing so. In addition to these brand strengths, the timed Exhaust Valve is a universal part in the lineup that opens when the cam lobe lifts it and closes under strong spring force so the chamber can reseal and build compression. The steel alloy construction of the part resists extreme heat, and its springs, which when closed hold about seventy to ninety pounds, depending on application, resist leak-by at idle, while over two hundred pounds when wide open prevents valve float at high revs, allowing smooth and punchy Mazda engines. Using clean fuel and quality oil regularly helps to keep the Exhaust Valve free of deposits and forming a seal. When heat causes warping or cracking, power plummets and engines run roughly. So, accurate lash and quality componentry ensure each Mazda delivers the dynamic performance one has come to expect.

You'll get great performance and real durability when you pick genuine OEM Exhaust Valve. Mazda builds these using high-quality materials and official factory methods to ensure they hold up mile after mile. You deserve that Mazda reliability without the headache of cheap knockoffs. It is easy to find exactly what you need in our huge inventory of genuine parts. Plus, every OEM part carries a real manufacturer's warranty for your peace of mind. You will love our low prices too. Order today and we will ship your brand-new parts fast. They often reach your door in just a few days.

Mazda Exhaust Valve Parts and Q&A

Exhaust Valve
L506-12-121
Q:
How to properly measure and adjust Exhaust Valve and Intake Valve clearances when replacing lifters in a vehicle on Mazda 3?
A:
Take off the battery cover. Disconnect the cable from the negative battery terminal. Remove all of the spark plugs. Loosen the right front wheel lug nuts. Raise the front of the vehicle and support it securely on jack stands. Then remove the wheel and the fender splash shield. With a wrench or a socket on the crankshaft pulley bolt, rotate the crankshaft in the clockwise direction, checking each lifter when its camshaft lobe is straight up, i.e. the measurement is taken between the base circle of the camshaft lobe and the top of the lifter with feeler gauges measuring the clearances. The distance between each cam's lob and its respective lifter must be measured and notes carefully recorded for each lifter's measurement. Should any measurement fall outside the recommended clearances, remove the camshafts and replace the out-of-spec lifters. New lifters of various thicknesses are available to make the valve clearances correct. Each is marked with a number that indicates thickness. Specifically, only the numbers after the decimal are relevant: for example, a "0.650" marking refers to an actual thickness of 3.650 mm. The desired thickness of the new lifters is determined by adding the thickness of the original lifter to the measured clearance. From this figure subtract the midrange for the ideal clearance. This will give the proper lifter thickness to order. Not every thickness is available so pick the closest. Following the installation of the camshafts and timing chain, one should recheck the valve clearances. Moreover, the procedure for fitting the timing chain is the reverse of removal. Subsequently, run the engine, and check for oil leaks.
Exhaust Valve
CA01-12-121
Q:
How to Check and Adjust Exhaust Valve and Intake Valve Clearances on Mazda 6?
A:
These steps are applicable to I-4 engines and 3.7L V6 engines. Start by removing the negative battery cable. After that, isolate and disconnect all of the spark plugs and remove the valve cover. After loosening the right front wheel lug nuts, raising the front of the vehicle, securely supporting it on jackstands, remove the wheel and fender splash shield. By means of a wrench or a socket on the bolt on the crankshaft pulley, rotate the crankshaft clockwise. Check each lifter with the camshaft lobe straight above it. The measurement must be between the base circle of the camshaft lobe and the top of the lifter. Feeler gauges must be used to measure the clearances. The distance between each camshaft lobe and the lifter must be checked. The measurements recorded for each lifter must be noted down carefully. You must remove the camshafts and any out-of-spec lifters if any measurement is outside the recommended clearance. New lift designs can be supplied with a range of thicknesses to correct the valve clearances. Each design is marked with a thickness number. It is important to only consider the number after the decimal point. For example, if a design is marked "0.650" then this refers to a thickness of 3.650 mm. To calculate the thickness of the new lifters. Take the thickness of the original lifter and add it to the measured clearance. Then, minus the midrange figure for the ideal clearance. This will give you the correct lifter thickness to order. Note that all thicknesses are not available, so its best to take the closest to what you need. After installation of camshafts and timing chain check valve clearance again. Reinstall the remaining part in reverse order and run the engine to check for leaks.