VITON ACCELERATOR PUMPS USAGE SERVICE REPLACEMENT ONLY
MODELS: Current and Past Models Equipped With Dual and Quadrajets - 1975-83
Viton accelerator pumps are now available from WDDGM for service when a customer is using a high aromatic fuel, gasohol or has dry-out conditions stemming from long periods of non-operation.
Two (2) types of viton accelerator pumps are released and must be used in the correct float bowl assembly.
Float bowl assemblies that have the letters "MW" (machined well) embossed next to the throttle position sensor electrical connector use the red lip (with garter spring) viton accelerator pump only. See Figure 1.
Some 1982-83 "MW" float bowl assemblies used during production were assembled with the red viton pump and some were not. If the float bowl assembly does not contain the red viton pump a blue dot will be on the rear of the throttle body near the bolt hole. See Figure 1.
If the letters "MW" are not on the float bowl assembly a blue, thin lip accelerator pump can be used per the part list included with this bulletin. This float bowl assembly has the non-machined pump well and uses the blue, thin lip accelerator pump only.
Viton service replacement pumps are identified as H.D. (Heavy Duty) in the parts book and are shown in Figure 2.
Applications are as follows:
Red Lip (With Garter Spring) Machined Well Only (MW) Blue, Thin Lip Non-Machined Well Only
Dual and Quadrajet pump part numbers:
Red Lip (With Garter Spring) 17072978 Blue, Thin Lip See Parts List
PUMP ASSEMBLIES USED IN DUALJET AND QUADRAJET BUICK
APPLICATIONS FOR 1975-82 (BLUE, THIN LIP)
ORIGINAL PUMP ASSEMBLY REPLACEMENT PUMP ASSEMBLY Non-Machined Wells Only
7048871 17074106
17051117 17074109
17051374 17074104
17064156 - (17082196 Carb Only) 17074118
REPLACEMENT PUMP ASSEMBLIES FOR DUALJET AND QUADRAJET
BUICK APPLICATIONS 1975 - 82
1975 CARB NUMBER REPLACEMENT PUMP ASSY.
7045240 17074106
7045244 17074109
7045246 17074109
7045541 17074106
7045544 17074109
7045548 17074106 1976 17056240 17074106
17056244 17074109
17056246 17074109
17056540 17074106
17056544 17074109
17056546 17074109 1977 17057241 17074109
17055242
17057248
1978 CARB NUMBER REPLACEMENT PUMP ASSY
17058192 17074104
17058240 17074104
17058241 17074109
17058246 17074109
17058249 17074106
17058498 17074104
17058540 17074104 1979 17059180 17074104
17059184
17059190
17059191
17059193
17059194
17059196
17059240
17059241 17074109
17059242 17074104
17059243 17074104
17059247 17074106
17059249 17074106
17059491 17074104
17059492
17059496
1979 CARB NUMBER REPLACEMENT PUMP ASSY.
17059498 17074104
17059540
17059543
17059544
17059546
17059547 1980 17080185 17074104
17080187
17080190
17080191
17080192
17080195
17080197
17080199
17080240
17080241
17080242
17080243
17080244
17080247
17080249
17080491
17080493
1980 CARB NUMBER REPLACEMENT PUMP ASSY.
17080495 17074104
17080496
17080498
17080540
17080542
17080543
17080545 1981 17081190 17074104
17081191
17081192
17081193
17081194
17081196
17081197
17081198
17081199
17081242
17081243
17081245
17081247
17081248
17081249
17081289
1981 CARB NUMBER REPLACEMENT PUMP ASSY
17081294 17074104
17081295
17081492
17081493
17081496
17081497 1982 17082183 17074104
17082192
17082194
17082195
17082196 17074118
17082197 17074104
17082243
17082244
17082245
17082246
17082247
17082248
17082249
17082260
1982 CARB NUMBER REPLACEMENT PUMP ASSY.
17082294 17074104
17082295
17082298
17082299 17082492
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.
