Spark Plug Specifications

Torque specifications for unlubricated spark plugs for standard engines is 27-28 Nm (20-24 ft/lb) and for MotorSport 22-28 Nm (16-21 ft/lb)

  Model Spark Plug Plug Gap
 318i (E36) M42 All Bosch F7LDCR
NGK BKR6EK
Non-Adjustable
 318i (E30) M42 All Bosch F7LDCR
NGK BKR6EK
Non-Adjustable
 318i (E30) M10 All Bosch WR9DS .032" - .036" (0.8 - 0.9 mm)
 320I (E21) M10 All '77 - '79 Bosch W9D .024" - .028" (0.6 - 0.7 mm)
 320I (E21) M10 All '80 - '83 Bosch WR9DS .024" - .028" (0.6 - 0.7 mm)
 325e (E30) M20 All Bosch WR9LS .028" - .032" (0.7 - 0.8 mm)
 325e (E30) M20 All w/Motronic M1.1 Bosch W8LCR .028" - .032" (0.7 - 0.8 mm)
 325i (E30) M20 All Bosch W8LCR or W8LPR (Platinum) .028" - .032" (0.7 - 0.8 mm)
 325x (E30) M20 All Bosch W8LCR or W8LPR (Platinum) .028" - .032" (0.7 - 0.8 mm) 
 M3 Bosch X5DC .024" - .028" (0.6 - 0.7 mm)
 325I (E36) M50 All Bosch F7LDCR
NGK BKR6EK
Non-Adjustable
 M3 (E36) S50 Bosch F7LDCR
NGK BKR6EK
Non-Adjustable
 528e (E28) M20 All '82 - '87 Bosch WR9LS .028" - .032" (0.7 - 0.8 mm)
 528e (E28) M20 All w/Motronic M1.1 Bosch W8LCR .028" - .032" (0.7 - 0.8 mm)
 528i (E12) M30 All 1979 Bosch W9D .024" - .028" (0.6 - 0.7 mm)
 528I (E12) M30 All '80 - '81 Bosch WR9DS .024" - .028" (0.6 - 0.7 mm)
 525i (E43) M20 All Bosch W8LCR or W8LPR (Platinum) .028" - .032" (0.7 - 0.8 mm)
 525i (E34) M50 All Bosch F7LDCR
NGK BKR6EK
Non-Adjustable
 530i (E34) M60 All Bosch F7LDCR
NGK BKR6EK
Non-Adjustable
 533i/535i (E28) m30 All '83 - '88 Bosch WR9LS .028" - .032" (0.7 - 0.8 mm)
 535i (E34) M30 All Bosch W8LCR or W8LPR (Platinum) .028" - .032" (0.7 - 0.8 mm)
 540i (E34) M60 All Bosch F7LDCR
NGK BKR6EK
Non-Adjustable
 M5 (E28) S38 Bosch X5DC .024" - .028" (0.6 - 0.7 mm)
 M5 (E34) S38 Bosch Y6DC .024" - .028" (0.6 - 0.7 mm)
 630csi (E24) M30 All Bosch W8DC .024" - .028" (0.6 - 0.7 mm)
 633csi (E24) M30 All '78 - '79 Bosch W9D .024" - .028" (0.6 - 0.7 mm)
 633csi (E24) M30 All '80 - '81 Bosch WR9DS .024" - .028" (0.6 - 0.7 mm)
 633csi/635 (E24) M30 All '82 - '84 Bosch WR9LS .028" - .032" (0.7 - 0.8 mm)
 635csi (E24) M30 All '88 - '89 w/Motronic M1.1 Bosch W8LCR or W8LPR (Platinum) .028" - .032" (0.7 - 0.8 mm)
 M6 (E24) S38 Bosch X5DC .024" - .028" (0.6 - 0.7 mm)
 733i (E23) M30 All '78 - '79 Bosch W9D .024" - .028" (0.6 - 0.7 mm)
 733i (E23) M30 All '80 - '81 Bosch WR9DS .024" - .028" (0.6 - 0.7 mm)
 733i/735 (E23) M30 All '82 - '84 Bosch WR9LS .028" - .032" (0.7 - 0.8 mm)
 735i (E32) M30 All Bosch W8LCR or W8LPR (Platinum) .028" - .032" (0.7 - 0.8 mm)
 740i (E32) M60 All Bosch F7LDCR
NGK BKR6EK
Non-Adjustable
 740i (E38) M60 All Bosch F7LDCR
NGK BKR6EK
Non-Adjustable
 750i (E32) M70 All Bosch F8LCR .028" - .032" (0.7 - 0.8 mm)
 750i (E38) M73 All Bosch F9LCR .028" - .032" (0.7 - 0.8 mm)
 840ci Bosch F7LDCR
NGK BKR6EK
Non-Adjustable
 850i (E31) M70 All Bosch F8LCR .028" - .032" (0.7 - 0.8 mm)
 850i (E31) M73 Bosch F9LCR .028" - .032" (0.7 - 0.8 mm)
 850csi (E31) S70 Bosch F8LCR2 Non-Adjustable

 

 

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