Engines and Components› Belts and Pulleys

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Bull Boost Performance Road Pump Kit

$69.99

SKU: 720053571059

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Bull Boost Off-Road Pump Kit Pump Pulley Kit is a performance part designed for 1985-1991 Chevrolet Corvette C4 L98 models. It aims to simplify the engine bay and free up performance by reducing accessory drag. This kit includes pump and idler pulley components and is built for durability and straightforward installation.
Show original supplier description
The Bull Boost Performance Off Road Pump Kit is a pulley kit designed to simplify your engine bay and offer potential performance gains for the 1985-1991 Corvette C4 L98. This kit offers a black finish, providing an alternative aesthetic to traditional billet components while maintaining a focus on quality and affordability. Installation is described as straightforward, with customers reporting that it bolts right up. One user noted that the stock belt was too loose after installation and recommended using a Duralast Serpentine/Belt Part #: 880K6, which is an 88-inch long, 6-rib belt, as the stock belt is 89 inches long. Customers have expressed satisfaction with the product's fitment and function. Reviews mention it as a quality part that works perfectly and is easy to install. The kit is offered with an optional 1-year warranty, in addition to the standard 30-day warranty.
Vehicle Symptoms
  • Engine feels underpowered at high RPM
  • Accessory drag reducing throttle response
  • Want to simplify engine bay for track use
  • Belt squeal from worn factory pulleys
  • Need to reduce rotating mass for racing
Relevant Conversations
  • C4 Corvette L98 pulley upgrade for more power
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  • reduce parasitic drag on L98 Corvette
  • best pulley kit for track Corvette C4
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  • L98 high performance pulley kit forum
  • Bull Boost off-road pump pulley kit 720053571059

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandOff
Part Number720053571059
CategoryAir and Fuel
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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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