Engines and Components› Belts and Pulleys

BBK

BBK 85-97 GM Truck 305 350 Underdrive Pulley Kit - Lightweight CNC Billet Aluminum (3pc)

$501.10

SKU: B004 1598

In Stock
In Stock
Ships by Jun 19
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

This BBK 1598 underdrive pulley kit is a 3-piece billet aluminum kit designed to increase horsepower by 8-15 HP in approximately 30 minutes. It's a direct bolt-on replacement that maintains proper cooling and charging functions while reducing rotating weight due to its lightweight CNC billet aluminum construction. This part is not C.A.R.B approved and cannot be sold or shipped to California residents or addresses for use on emissions-controlled vehicles.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandBBK
Part NumberB004 1598

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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