Motorcraft stk 21 - Alternative spark plugs

There are 85 replacement spark plugs for Motorcraft stk 21. The cross references are for general reference only, please check for correct specifications and measurements for your application.

• Motorcraft stk 21 replacement spark plugs
• Accel 114
• ACDelco 41-602
• ACDelco FR1LS
• ACDelco R42XLSM
• ACDelco R44XLSE
• ACDelco R44XLSM
• Autolite 3885
• Autolite 3895
• Autolite 3896
• Autolite 3923
• Autolite 3924
• Autolite 912
• Autolite 915
• Autolite 922
• Autolite 925
• Autolite 935
• Autolite 945
• Beck Arnley 176-5082
• Beck Arnley 176-5194
• Beck Arnley 176-5232
• Bosch F7DC
• Bosch F8DC
• Bosch FR7DC
• Bosch FR8DCX
• Bosch WR9HC
• Bosch stk 7554
• Bosch stk 7555
• Bosch stk 7557
• Bosch stk 7560
• Champion 2089
• Champion 4412
• Champion 4434
• Champion RC12LYC
• Champion RC12YC
• Champion RC14YC
• Champion RC15E5
• Champion RC9YC
• Champion RN11YC
• Champion RN13LYC
• Champion stk 101
• Champion stk 2089
• Champion stk 344
• Champion stk 412
• Champion stk 431
• Champion stk 4412
• Champion stk 4434
• Champion stk 71
• Denso J16BR-U
• Denso K20PR-U
• Denso Q16PR-U11
• Denso Q20PR-U11
• Denso W16EPR-U
• Denso W16EXR-U
• Denso Iridium IQ16
• Denso Iridium stk 5301
• Denso stk 3001
• Denso stk 3008
• Denso stk 3021
• Denso stk 3031
• Denso stk 3145
• Denso stk 5016
• General Motors 5613702
• General Motors 5613711
• General Motors 5613716
• General Motors 5614062
• General Motors 5614285
• Mopar 4671057
• Mopar 4864455
• Mopar 4864464
• Mopar 4864465
• Mopar 56006240
• Mopar 56027275
• Mopar 82300316
• Motorcraft AGS44
• Napa X761
• NGK 09-05-01
• NGK 09-06-05
• NGK BPR5ES
• NGK GR4
• NGK ZGR5C
• NGK stk 2635
• NGK stk 6334
• NGK stk 7252
• NGK stk 7373
• NGK stk 7734

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Replacement spark plugs for Motorcraft STK 21 on Amazon