March 69-77 2-Groove Polished Aluminum Crank Pulley-15% Underdrive - 13031 Black (MAR-13031-08)

SKU: MAR-13031-08

March 69-77 2-Groove Polished Aluminum Crank Pulley-15% Underdrive. Pontiac V-Belt Crankshaft Pulley (2V) Finish: Black.

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Pricing: $119.95

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Description

March Double-Groove Aluminum Crank Pulley — 15% Underdrive

Part No.

MAR-13031-08

Finish

Black

Family

V-Belt Pulley

A two-groove billet aluminum crank pulley with 15% underdrive for the Pontiac V-8, for cars running a second belt to power steering or A/C. The reduced drive ratio slows the accessories at RPM and gives back parasitic power while keeping the factory belt arrangement intact.

Includes

2-groove crank pulley (6-1/8")
All mounting hardware

Application

Pontiac 326, 350, 389, 400, 421, 428 and 455 c.i. V-8

Fitment requirements

1968 & newer harmonic balancer (balancer without v-groove)
1969 & newer 11-bolt water pump, 4-1/2"

Before you order

Fits 1969–1977 Pontiac V-8 applications.

Finish — March BLACK

A simple but premium black powder coat for a more modern — or more factory — appearance.

Availability: Minimal wait, ships within 1–2 weeks

Why Buy It From Butler

Butler Performance builds Pontiac engines every day, and we sell the accessory drives we actually run on them. If you are not certain which balancer, timing cover or water pump is on your engine — or which chassis version of a kit your car takes — call us before you order. It is a five-minute phone call that saves a return.

866-762-7527

Butler Tech Library

Building It Right the First Time

How Butler balances power and reliability, plus the pre-assembly checks worth running before parts go on.

Read the Build Guide ›

Also HelpfulPre-Assembly Tip Sheet ›Instruction Sheets ›