Many fuel pumps are often used on similar engines. In order to identify the correct fuel pump for your application, it is necessary to determine the position of the inlet, outlet and separator fitting (where applicable) in relation to the rocker arm. The angle between the rocker arm and the fuel inlet is expressed in terms of clock position. Place pump with rocker arm in the 12 o’clock position. The rocker arm must be held behind the fuel pump body. (The bottom of the fuel pump body must face you.) Observe the relationship of the fuel inlet to the rocker arm. This position is the clock position of the pump. Examples of this in the outline drawing below show that if the fuel inlet is at position "A", it is considered a 6 o’clock pump, if at position "B". a 3 o’clock pump, and at position "C" an 8 o’clock pump. AC STYLE FUEL PUMPS Engines Manufactured Before February 1, 1979 Engine Application GM153, 230, 250, 292, (4&6 cyl) Crusader, Mercruiser, OMC Hercules B, D , J , JXD, Series, M Series Chris-Craft , US Marine, Owens Yacht GM225, PB-V215 (V-6) OMC, Palmer GM-V-8, 283, 307, 327, 350, 409 GM V-8 307, 350 Chrysler V-8 273, 318, 340, 360 Chris-Craft, Owens, Universal, Crusader OMC Chrysler Engines Manufactured After January 31, 1979 Chrysler V-8 318, 360 Chrysler V-8 361, 400, 413, 440 GM V-8 305, 350, 400 Ford V-8 302, 351w Ford V-8 302, 351w GM V-8 305, 307, 350, 400 GM V-8 454 GM V-8 305, 350, 400 GM V-8 454 GM V-8 283, 305, 350, 400 GM V-8 305, 350, 400 GM V-8 454 Chrysler Chrysler Mercruiser, OMC, Chris-Craft Ford, Mercruiser, Commander OMC, Mercruiser, Pleasurecraft, Thermo-Electron Harman, OMC, Thermo-Electron (5.25-6.5 PSI) Mercruiser Thermo-Electron (5.75-7PSI) Thermo-Electron Flange I.D. # 6790 7241 40001 40155 40778 40781 6766 6767 41412 41413 41414 41415 41416 41417 41418 Chris-Craft, Crusader, Hardin, Thermo-Electron (5.75-6.5 PSI) 41419 Mercruiser Hawk, Mercruiser CARTER STYLE FUEL PUMPS Engine GM (4 & 6 cyl) 153,181,250, 225 GM V-8 305, 350 41421 41422 *18-7268 – Dual Diaphragm requires sight glass Application Chris-Craft, Indmar, Marine Power, Mercruiser, OMC Volvo Penta For Inline (4 cyl) 120, 140, 3.0L, 224 CID Mercruiser GM V-6 262/4.36 GM V-8 305, 350 GM V-6 231, 262 OMC Mercruiser, Panther Hardin, Mercruiser XP Stamped Steel Pump Volvo Penta AQ120B (spec# 867465), AQ125A/B, AQ131A/ B/C/D, AQ140A (spec# 867464), BB140A, AQ145A, BB145A, AQ151A/B/C, AQ171A/C, AQ230A/B, AQ250A/B, AQ251A Flange I.D. # 60032 61125/6973 60337 60201 60600 60315 60029 Inlet 8 9 8 2 10 8 3 Outet 4 11 3 4 9 3 6 Sight Tube Connection 3 9 8 9 4 8 11 Inlet 8 6 8 9 4 4 4 4 9 5 7 7 9 7 3 3 10 9 CLOCK POSITION Outet 4 9 4 3 10 8 8 8 3 4 5 5 8 5 9 9 9 3 — 4 4 9 4 4 8 7 8 8 8 7 7 Separator — — — 10 9 Part # 18-7256 — — 18-7260 — 18-7264 18-7254 18-7255 18-7265 18-7266 18-7267 18-7268* — 18-7270 18-7271 18-7272 18-7274 18-7275 Part # 18-7278 18-7281 18-7282 18-7289 18-7283 18-7284 18-7286 449 ACCESSORIES — FUEL - Fuel Pumps
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