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.

Genuine Mazda 3 Exhaust Valve

Exhaust Muffler Valve

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10 Exhaust Valves found

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Mazda 3 Exhaust Valve Part Number: PYFA-12-121
$13.11 MSRP: $17.49
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Product Specifications
- Other Name: Valve, Exhaust
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2024 Mazda 3 | 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
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Mazda 3 Exhaust Valve Part Number: PE27-12-121
$14.06 MSRP: $18.76
You Save: $4.70 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2021-2022 Mazda 3 | 2.0 | 4 Cyl 2.0 L GAS
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Mazda 3 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
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2024 Mazda 3 | 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
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Mazda 3 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
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2018 Mazda 3 | I Sport, I Touring, Sport, Touring, i Grand Touring, i SV | 4 Cyl 2.0 L GAS
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Mazda 3 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
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2004-2013 Mazda 3 | Mazdaspeed, i | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS
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Mazda 3 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
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2021-2024 Mazda 3 | 2.5 Carbon Turbo, 2.5 Turbo, 2.5 Turbo Premium Plus | 4 Cyl 2.5 L GAS
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Mazda 3 Exhaust Valve Part Number: L3K9-12-121D
$63.96 MSRP: $85.31
You Save: $21.35 (26%)
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Product Specifications
- Other Name: Valve, Exhaust
- Replaces: L3K9-12-121, L3K9-12-121C, L3K9-12-121B
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2007-2013 Mazda 3 | Mazdaspeed | 4 Cyl 2.3 L GAS
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Mazda 3 Exhaust Valve Part Number: L506-12-121
$15.83 MSRP: $21.10
You Save: $5.27 (25%)
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Product Specifications
- Other Name: Valve, Exhaust
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2010-2013 Mazda 3 | S | 4 Cyl 2.5 L GAS
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Mazda 3 Exhaust Valve Part Number: PY01-12-121
$17.23 MSRP: $22.97
You Save: $5.74 (25%)
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Product Specifications
- Other Name: Valve, Exhaust
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2020 Mazda 3 | Base, Grand Touring, Preferred, Premium, Select, Touring, s Grand Touring, s Touring | 4 Cyl 2.5 L GAS
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Mazda 3 Exhaust Valve Part Number: PE01-12-121
$19.43 MSRP: $25.90
You Save: $6.47 (25%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Valve, Exhaust
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2012-2018 Mazda 3 | I Sport, I Touring, Sport, Touring, i, i Grand Touring, i SV | 4 Cyl 2.0 L GAS

Mazda 3 Exhaust Valve

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Mazda 3 Exhaust Valve Parts and Q&A

Exhaust Valve
L3K9-12-121D
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.