Springs and components
BLP offers genuine Holley® and BLP manufactured components. This allows our customers the very best in quality and function for their builds.
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Spring, 4500 throttle adjustment
Part Number:381559 Throttle Adjustment Spring, 4500$1.38... more info -
Spring, 4150 primary idle adjustment.
Part Number:38110 Throttle Adjustment Spring, 4150$0.42... more info -
Spring, 4150 primary idle adjustment.
Part Number:381101 Throttle Adjustment Spring, 25% Heavier$0.65... more info -
4150 Secondary Throttle Return Spring
Part Number:381762 Secondary Throttle Return Spring with Progressive Linkage, 4150 This spring is 25% stronger than the OEM spring and is made from...$3.99... more info -
4150 Throttle Adjustment Spring
Part Number:38110 Throttle Adjustment Spring, 4150$0.42... more info -
4500 Throttle Adjustment Spring
Part Number:381559 Throttle Adjustment Spring, 4500$1.38... more info -
Pump Diaphragm Spring, Lightweight, 30cc, Green
Part Number:381375 Pump Diaphragm Spring, Lightweight, 30cc, Green$0.80... more info -
Secondary Return Spring Pin
Part Number: 291094 Secondary Return Spring Pin$0.62... more info -
Pump Diaphragm Spring, Heavy, 30cc, Plain
Part Number:38569 Pump Diaphragm Spring, Heavy, 30cc, Plain$0.55... more info -
Pump Diaphragm Spring, 50cc
Part Number:381490 Pump Diaphragm Spring, 50cc$0.45... more info -
Sec return pin for BLP. Billet base stainless
Part Number:291094-BLP Secondary Return Spring Pin Made of 303 stainless steel for use in all BLP Billet base plates.$0.62... more info -
Secondary return spring pin for 4150.
Part Number:291094 Secondary Return Spring Pin$0.62... more info -
Throttle Return Spring, 4500 Reverse wound
Part Number: 381500R Throttle Return Spring, 4500 Application: 2 required$1.35... more info -
Throttle Return Spring, 4500
Part Number: 381500 Throttle Return Spring, 4500 Application: 2 required$1.35... more info