Serpentine Pulleys

Long Water Pump Performance Ratios:

  Set 

Crank Pulley

W/P Pulley

Alt. Pulley with Nose Cover

P/S Pulley Keyway

P/S Pulley Press Fit

Alt. Belt Size with March Bracket : 20120

P/S Belt Size with March Bracket : 20160

 6310

 6311 (5.75")

 6312 (6.25")

 208 (2.75")

 41"

 6330

 6331 (5.75")

 6312 (6.25")

208 (2.75")

 Optional : 623

 Optional : 624

 41"

 33.5"

Long Water Pump Mid-Performance Ratios:

6350

 6311 (5.75")

 6322 (5.25")

208 (2.75")

 40"

6355

 6331 (5.75")

 6322 (5.25")

208 (2.75")

 Optional : 623

 Optional : 624

 40"

 33.5"

Long Water Pump High Water Flow Ratios:

6370

 6371 (7")

 6322 (5.25")

208 (2.75")

 42.5"

6380

 6381 (7")

 6322 (5.25")

208 (2.75")

Optional : 623

 Optional : 624

 42.5"

 35"

Long Water Pump Economy Kit:

Kit

Crank Pulley

W/P Pulley

Alt. Pulley

P/S Pulley Keyway

6321-112

Optional : 611

Short Water Pump Performance Ratios:

Set

Crank pulley

Water pump pulley

Alternator pulley with nose cover

Optional water pump nose cover

Optional alternator fan

 6210

 6211 (5.75")

 6212 (6.25")

208 (2.75")

Optional : 312

Optional : 221

Short Water Pump High Water Flow Ratios:

 6270

 6271 (7")

 6222 (5.25")

208 (2.75")

Optional : 312

Optional : 221