NGK BR6FS spark plug

These spark plugs are suitable for the following models, among others:

• Mercruiser
• 4 cyl. 2.5L 153 CID
• 4 cyl. 165, 170 (224 CID)
• 4 cyl. 180, 190 (224 CID)
• 4 cyl. 3.7L, 3.7LX (224 CID)
• 4 cyl. 470, 485, 488 (224 CID)
• 4 cyl. 470, 485, 488 (224CID)
• 6 cyl. 200, 175, 185, 205, 185 (229 CID)
• 8 cyl. 250, 255, 260 Serial no. from 4768000
• 8 cyl. 280, 300 Tempest, 320 EFI, 350 MAG
• 8 cyl. 5.7i, 5.7L EFI Serial no. up to OL000000
• 8 cyl. 5.7LX, 5.7LX EFI
• 8 cyl. 350 MAG EFI/MP Serial no. from OF602199
• 8 cyl. 350 MAG MPI Gen+ Serial no. OF602000 - OM320489
• 8 cyl. 255 Serial no. up to 4175498
• 8 cyl. 420, 440 Ciclone, 454 MAG ALPHA
• 8 cyl. 454 Magnum Bravo, 454 MAF EFI-MPI
• 8 cyl. 502 MAG, 502 MAG EFI-MP, MPI
• 8 cyl. 7.4L ALPHA, 7.4L Bravo
• 8 cyl. 7.4LX EFI Bravo, MPI Bravo
• 8 cyl. 7.4TR Serial no. OB771113 - OC407646
• 8 cyl. HP425, HP450, HP465, HP 500, 502CID
• Volvo Penta AQ
• 260, A, B
• 271A, B, C, D
• 290A, 290B, 311A, 311B
• 430, 500A, 501A, 531, 570A
• 571A, 572, 740A
• Volvo Penta DPX
• 7.4L DPX 385 GSi EFI
• 8.2L DPX 415 GSi EFI
• Volvo Penta Duoprop series
• 5.7L GL 2 bbl
• 5.7L GS 4 bbl
• 7.4L GL 4 bbl
• 7.4L GSi EFI
• 8.2L GSi EFI
• Volvo Penta SX Cobra
• 5.7L GL 2 bbl
• 5.7L GS 4 bbl
• 7.4L GL 4 bbl

• Thread diameter: 14 mm
• Thread length: 11.2
• Electrode gap: 0.8 mm
• Mercruiser ref. no.: 33-898264001

Replaces the following manufacturer ref. no.

• Mercruiser 33-400, 33-400S, 33-59571B, 33-898264001, 400, 59571, 898264, 898264001
• NGK 4323, BR6FS, URR
• OMC/Johnson/Evinrude 0503708, 0507669, 0509573
• Yamaha 94701-00365-00, 947010036500, BR6-FS000-00-00, BR6FS0000000
• Honda BR6FS
• Champion 400, RV9YC