Engines and Components› Belts and Pulleys

Billet Specialties

SERP SYS SB CHEVY NO P/S NO A/C PRE

$2,314.95

SKU: B01D 13125A

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Special Order
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Non-Returnable Item
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Description

The Billet Specialties 13125A Tru Trac Serpentine System is a complete accessory drive kit designed for Small Block Chevrolet (SBC) engines. This system features precision-machined billet aluminum brackets and pulleys to provide a compact, reliable accessory drive setup.

The kit includes all necessary pulleys, brackets, and high-quality hardware required for installation. It is engineered to improve belt alignment and engine bay aesthetics while maintaining consistent performance for aftermarket accessories.

Important fitment considerations include confirming the water pump configuration (long vs. short) and verifying harmonic balancer style, as these factors determine pulley alignment and system clearance. Professional installation or careful measurement is recommended to ensure proper fitment.

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

BrandBillet Specialties
Part NumberB01D 13125A

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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