Thermostat

Thermostats are an important part present under the hood of your Mazda that operate alongside other cooling system parts. Thermostats adjust the flow of coolant that gets through to the radiator. It does this by opening and closing as needed to send or prevent coolant from getting through. Coolant helps prevent overheating and contributes to the proper working of the engine. Thermostats can get damaged over time and get stuck in an open or closed position, which can cause major issues. Changing your thermostat when you notice issues will ensure your engine continues to operate properly. Recognizing the symptoms of a failing thermostat is important to catch problems early. The issues will vary depending on the core problem. For instance, you may notice various temperature reads which are inaccurate or unpredictable. Improper reads such as excessively high or low also indicate problems with the thermostat (unless there are other underlying issues such as with the radiator). In some cases, this may cause starting issues with your vehicle. Replace your thermostat with an OEM part if you need to change it out. Aftermarket components may cause issues including erroneous temperature reads during travel. For Mazda OEM thermostat replacement parts and related components, you can visit our online store.

Thermostat
8AF6-15-171-9U
Other Names: Thermostat Set More
Replaces: 8AF3-15-171, 8AF5-15-171, 8AF6-15-171, N3A1-15-171
Description: RX-7. Rx7. More
Fits:
  • Mazda:
    • RX-7
$21.89
$15.62
$21.89
$15.62
Thermostat
8AH1-15-171B-9U
Other Names: Thermostat Set More
Replaces: 8AH1-15-171, 8AH1-15-171A, 8AH1-15-171B, 8AL1-15-171
Description: MPV More
Fits:
  • Mazda:
    • 929,
    • MPV
$29.93
$21.36
$29.93
$21.36
Thermostat
8AK1-15-171-9U
Other Names: Thermostat ( W O Gasket ) More
Replaces: 8AK1-15-171, 8AN1-15-171, F201-15-171, F201-15-171A
Description: 323, PROTEGE; SOHC More
Fits:
  • Mazda:
    • 323,
    • 626,
    • B2600,
    • Miata,
    • MPV,
    • MX-3,
    • MX-6,
    • Protege
  • 3 more
$21.89
$15.62
$21.89
$15.62
Thermostat
GY01-15-171
Other Names: Thermostat No Gasket More
Replaces: AJ03-15-17X, AJ51-15-17X
Description: 3.0 LITER More
Notes: Included With Thermostat Unit. More
Fits:
  • Mazda:
    • 6,
    • MPV,
    • Tribute
$22.25
$15.89
$22.25
$15.89
Thermostat
BP6F-15-171A
Other Names: Thermostat(W O Gasket) More
Replaces: 8ABE-15-171, BP6F-15-171
Description: MIATA MX5 More
Fits:
  • Mazda:
    • Miata,
    • Protege
$36.33
$25.93
$36.33
$25.93
Thermostat
KL01-15-171A-9U
Other Names: Thermostat ( W Gasket ) More
Replaces: 8AGX-15-171, 8AK2-15-171, FS05-15-171, KL01-15-171, KL01-15-171A
Description: 626, MX-6; 6 CYLINDER More
Fits:
  • Mazda:
    • 2,
    • 626,
    • Millenia,
    • MPV,
    • MX-3,
    • MX-6,
    • Protege,
    • Protege5
  • 3 more
$25.09
$17.91
$25.09
$17.91
Thermostat
8ABB-15-171-9U
Other Names: Thermostat Set More
Replaces: 8ABB-15-171
Description: B2200 More
Fits:
  • Mazda:
    • 626,
    • B2000,
    • B2200,
    • MX-6
$21.93
$15.65
$21.93
$15.65
Thermostat
8AF1-15-171-9U
Other Names: Thermostat Set More
Replaces: 8AF1-15-171, 8AF1-15-171-PT
Description: RX7 More
Fits:
  • Mazda:
    • RX-7
$21.82
$15.58
$21.82
$15.58
Thermostat
B3H8-15-171A
Other Names: Thermostat Set More
Description: B2000 More
Fits:
  • Mazda:
    • B2000,
    • GLC
$22.48
$16.04
$22.48
$16.04
Thermostat
8BU1-15-171
Other Names: Thermostat Set More
Description: B2600 More
Fits:
  • Mazda:
    • B2600
$20.88
$14.90
$20.88
$14.90
Thermostat Housing
B597-15-172
Other Names: Cover Thermostat More
Description: MX-3; 1.6L More
Fits:
  • Mazda:
    • MX-3
$26.32
$18.79
$26.32
$18.79
Thermostat Housing
CA60-15-170A
Other Names: Thermostat Unit, Cover Thermo More
Replaces: CA20-15-170, CA20-15-170A, CA68-15-170
Description: CX-9; FROM 6/12/08 More
Notes: Includes Thermostat And Gasket. More
Fits:
  • Mazda:
    • CX-9
$289.72
$198.13
$289.72
$198.13
Thermostatic Switch
FD01-61-J20
Other Names: Thermostat, Thermostat Nla More
Description: RX-7; MANA More
Notes: Parts & Prices For Estimating Only. More
Fits:
  • Mazda:
    • RX-7
$105.96
$72.46
$105.96
$72.46
Thermostat Cover
JE96-15-172B
Positions: Lower
Other Names: Thermostat Housing, Cover Thermo More
Description: MPV. Lower. More
Fits:
  • Mazda:
    • MPV
$30.39
$21.69
$30.39
$21.69
Thermostat Housing
KL01-15-172
Positions: Front
Other Names: Thermostat Cover, Cover Thermo More
Description: 626, MX-6; W/O TURBO; ALL; 6 CYL More
Fits:
  • Mazda:
    • 626,
    • Millenia,
    • MX-3,
    • MX-6
$27.23
$19.44
$27.23
$19.44
Thermostat Unit
L357-15-170B
Other Names: Thermostat, Cover, Water Pump, Cover Thermo More
Replaces: 1F70-15-171, 1F70-15-171A, 1F70-15-171B, L356-15-170A, ZZC1-15-172, ZZC1-15-172A
Description: B2300 More
Notes: Includes Thermostat. More
Fits:
  • Mazda:
    • B2300,
    • Tribute
$49.89
$35.62
$49.89
$35.62
Thermostat Housing
N3H1-15-1H0B
Other Names: Case Thermostat More
Replaces: N3H1-15-1H0A, N3H1-15-1H0B-PT
Description: RX-8; TO 12/1/04 More
Fits:
  • Mazda:
    • RX-8
$150.56
$102.96
$150.56
$102.96
Thermostat Cover
ZZC4-15-172
Other Names: Cover, Cover Thermostat More
Description: THERMOSTAT COVER; TRIBUTE More
Notes: Included With Water Pump Assembly. More
Fits:
  • Mazda:
    • Tribute
$77.50
$54.39
$77.50
$54.39
Thermostat Unit
ZZJ1-15-172
Other Names: Thermostat Housing, Cover Thermo More
Replaces: CA01-15-170A, CA69-15-170
Description: MAZDA6 More
Notes: Includes Water Outlet, Thermostat And Gasket. More
Fits:
  • Mazda:
    • 6
$410.01
$277.93
$410.01
$277.93
Thermostat Housing
B6BF-15-172
Other Names: Water Outlet, Cover Thermostat More
Description: PROTEGE More
Fits:
  • Mazda:
    • Protege
$27.71
$19.78
$27.71
$19.78
Thermostatic Switch
BJ6B-61-J25
Other Names: Thermostat, Amplifier Thermo More
Replaces: GE4T-61-J25
Description: Protege. More
Notes: Included With Evaporator Assembly. More
Fits:
  • Mazda:
    • Protege,
    • Protege5
$60.22
$42.26
$60.22
$42.26
Thermostat Housing
FS05-15-172
Other Names: Thermostat Cover, Cover Thermo More
Description: 626, MX-6; 4 CYL More
Fits:
  • Mazda:
    • 626,
    • MX-6
$30.17
$21.54
$30.17
$21.54
Thermostat Cover
KJ01-15-172A
Other Names: Thermostat Housing, Cover Thermo More
Description: 2.3 LITER More
Fits:
  • Mazda:
    • Millenia
$30.84
$22.02
$30.84
$22.02
Thermostat Housing
KL47-15-170C
Positions: Rear
Other Names: Cover Thermostat More
Replaces: KL47-15-170, KL47-15-170B, KL61-15-540
Description: 2.5 LITER, REAR More
Fits:
  • Mazda:
    • Millenia
$127.81
$87.40
$127.81
$87.40
Thermostat Housing
LF70-15-170
Other Names: Thermostat Unit, Cover W Thermostat More
Replaces: LF50-15-170, LF50-15-170A, LF50-15-170B, LF50-15-170C, LF50-15-171, LF53-15-170, LF53-15-170A, LF53-15-170B, LFE5-15-170
Description: MIATA MX5; FROM 9/1/06 More
Notes: Includes Thermostat And Gasket. More
Fits:
  • Mazda:
    • 3,
    • 5,
    • MX-5 Miata
$65.68
$46.10
$65.68
$46.10
Thermostat Housing
1F73-15-172
Other Names: Thermostat Cover More
Replaces: 1F22-15-172, 1F22-15-172A
Description: 4.0 LITER, 2001-09 More
Fits:
  • Mazda:
    • B4000
$29.37
$20.97
$29.37
$20.97
Thermostat Cover
1F82-15-172
Other Names: Thermostat Housing, Cover Thermostat More
Replaces: 1F25-15-172, 1F72-15-172
Description: 4.0 LITER, 2001-09 More
Fits:
  • Mazda:
    • B4000
$14.55
$10.56
$14.55
$10.56
Thermostat Cover
AJ03-15-172C
Other Names: Thermostat Housing, Water Outlet, Cover, Cover Thermostat More
Replaces: AJ03-15-172, AJ03-15-172A, AJ03-15-172B
Description: MAZDA6; 3.0L; THERMOSTAT COVER More
Notes: Included With Thermostat Unit. More
Fits:
  • Mazda:
    • 6,
    • MPV,
    • Tribute
$26.88
$19.19
$26.88
$19.19
Thermostat Housing
KJ01-15-170
Other Names: Case Thermostat More
Description: 2.3 LITER More
Fits:
  • Mazda:
    • Millenia
$140.97
$96.40
$140.97
$96.40
Thermostat Unit
L336-15-170
Other Names: Thermostat, Thermostat Housing, Water Inlet, Cover, Thermostat Cover More
Replaces: L327-15-170, L327-15-170A, L327-15-171, L328-15-170A, L328-15-170B, LFE2-15-170, ZZCA-15-172, ZZCA-15-172A
Description: MAZDA6; 2.3L; INCLUDES THERMOSTAT. More
Notes: Includes Thermostat Gasket And Water Inlet. More
Fits:
  • Mazda:
    • 3,
    • 5,
    • 6,
    • CX-7,
    • MX-5 Miata,
    • Tribute
  • 1 more
$70.95
$49.80
$70.95
$49.80
Thermostat Housing
N3A1-15-170A
Other Names: Thermostat Cover More
Description: MANUAL TRANS More
Fits:
  • Mazda:
    • RX-7
$114.04
$77.99
$114.04
$77.99
Thermostat Housing
N3H1-15-1H0D
Other Names: Case Thermostat More
Replaces: N3H1-15-1H0C
Description: RX-8; FROM 12/1/04 More
Fits:
  • Mazda:
    • RX-8
$147.68
$100.99
$147.68
$100.99
Thermostat Housing
YF09-15-176B
Other Names: Case Thermostat More
Replaces: YF09-15-176, YF09-15-176A
Description: TRIBUTE; 2.0L More
Fits:
  • Mazda:
    • Tribute
$29.92
$21.36
$29.92
$21.36
Thermostat Gasket
9XB0-68-07S
Other Names: Gasket, Thermostat O-Ring, O-Ring Thermostat More
Description: MAZDA6; 3.0L More
Notes: Included With Thermostat Unit. More
Fits:
  • Mazda:
    • 6,
    • CX-9,
    • MPV,
    • Tribute
$6.85
$4.97
$6.85
$4.97
Thermostat Housing
BP6D-15-170A
Positions: Lower
Other Names: Cover Thermostat More
Description: MIATA MX5; LOWER More
Fits:
  • Mazda:
    • Miata
$76.24
$53.50
$76.24
$53.50
Thermostat Housing
BPE8-15-172
Positions: Upper
Other Names: Thermostat Cover, Cover Thermostat More
Description: Miata mx5. Upper. More
Fits:
  • Mazda:
    • Miata
$30.34
$21.66
$30.34
$21.66
Thermostat Unit
CY01-15-170A
Other Names: Thermostat Housing, Cover Thermostat More
Replaces: CY01-15-170, ZZJ1-15-17X, ZZJ1-15-17XA
Description: To 6/12/08. CX-9. More
Notes: Includes Thermostat And Gasket. More
Fits:
  • Mazda:
    • CX-9
$596.06
$400.47
$596.06
$400.47
Thermostat Housing
G601-15-172A
Other Names: Thermostat Cover, Cover Thermo More
Replaces: G601-15-172
Description: B2600 More
Fits:
  • Mazda:
    • B2600,
    • MPV
$27.80
$19.85
$27.80
$19.85
Thermostat Case
JE96-15-176
Positions: Upper
Other Names: Thermostat Housing, Case Thermostat More
Description: MPV. Upper. More
Fits:
  • Mazda:
    • MPV
$47.32
$33.78
$47.32
$33.78
Thermostat Housing
JF01-15-172A
Positions: Lower
Other Names: Thermostat Cover, Cover Thermo More
Description: 6 CYLINDER More
Fits:
  • Mazda:
    • 929,
    • MPV
$30.13
$21.52
$30.13
$21.52
Thermostat Housing
N3A2-15-170A
Other Names: Thermostat Cover More
Replaces: N3A2-15-170
Description: AUTO TRANS More
Fits:
  • Mazda:
    • RX-7
$99.50
$69.84
$99.50
$69.84
Thermostat Cover
P51B-15-172A
Other Names: Cover, Cover Thermostat More
Description: MIATA MX5 More
Fits:
  • Mazda:
    • MX-5 Miata
$39.63
$28.29
$39.63
$28.29
Thermostat Outlet
PY8W-15-172
Other Names: Water Outlet, Cover Thermostat More
Description: 2.5L turbo. Mazda6. More
Fits:
  • Mazda:
    • 6,
    • CX-5,
    • CX-9
$27.91
$19.92
$27.91
$19.92
Thermostat Housing
ZZM2-15-172
Other Names: Cover Thermostat More
Description: B4000 More
Fits:
  • Mazda:
    • B4000
$238.02
$162.77
$238.02
$162.77
Thermostat Housing
1F81-15-172
Other Names: Cover Thermostat More
Replaces: 1F61-15-172
Description: 3.0 LITER More
Fits:
  • Mazda:
    • B3000
$22.55
$16.10
$22.55
$16.10
Thermostat Housing
AJ57-15-171A
Other Names: Thermostat More
Replaces: AJ57-15-171
Description: MAZDA6; 3.0L; THERMOSTAT More
Notes: Included With Thermostat Cover. More
Fits:
  • Mazda:
    • 6,
    • MPV,
    • Tribute
$18.09
$13.13
$18.09
$13.13
Thermostat Unit Gasket
ZZJ1-15-592
Other Names: Thermostat O-Ring, Housing Gasket, Ring O -Water Outlet More
Replaces: CA19-15-174, CA60-15-174
Description: Mazda6. More
Notes: Included With Thermostat Unit. More
Fits:
  • Mazda:
    • 6,
    • CX-9
$10.73
$7.79
$10.73
$7.79
Thermostat Housing Gasket
ZZM1-15-173B
Other Names: Thermostat Gasket, Gasket Thermo More
Replaces: ZZM1-15-173, ZZM1-15-173A
Description: B3000 More
Fits:
  • Mazda:
    • B3000
$7.16
$5.20
$7.16
$5.20
Thermostat Housing Gasket
ZZP0-15-173
Other Names: Thermostat Gasket, Gasket Thermostat Cover More
Description: B2500 More
Fits:
  • Mazda:
    • B2500,
    • B3000
$13.55
$9.84
$13.55
$9.84
Thermostat Unit Gasket
LF03-15-165A
Other Names: Gasket, Thermostat Seal, Thermostat Gasket, Gasket W.Pump Inlet More
Replaces: 1F20-15-173, 1F20-15-173A, LF02-15-165, LF03-15-165, ZZC1-15-165
Description: 2.0L without skyactiv. 2.5L, 2009-2010. 2.5L, 2011-13. Tribute hev. Mazda5. Mazda6. B2300. 2.3L. CX-7. Without mazdaspeed. Without... More
Notes: Included With Thermostat Unit. Included With Water Outlet. More
Fits:
  • Mazda:
    • 3,
    • 5,
    • 6,
    • B2300,
    • CX-7,
    • MX-5 Miata,
    • Tribute
  • 2 more
$13.17
$9.56
$13.17
$9.56

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