Description
Product Overview
The Dorman 34230 Bypass Pulley is engineered to replace a malfunctioning air‑conditioning compressor while preserving the factory drive belt system. Crafted from robust steel and finished with a ready‑to‑paint exterior, the pulley measures 7.6 x 7.4 x 7.7 inches and weighs 2.05 pounds, offering a compact yet sturdy design. It matches OEM part numbers 2464NK, 77320, 78320, CO10410GLC, KT5140, KT5140A, TSN2324, and TSR2324, ensuring a precise fit for a wide range of vehicle makes and models. The component has undergone extensive quality testing, earning a 5‑star rating from verified customers.
Usage
Designed for everyday driving conditions, this bypass pulley is ideal for vehicles that have experienced A/C compressor failure but still require a functional serpentine belt to drive accessories such as the alternator, power steering pump, and water pump. It is suitable for both DIY enthusiasts and professional technicians who need a reliable, quick‑swap solution without the expense of a full compressor replacement. The pulley’s standard mounting points align perfectly with the original compressor location, minimizing downtime and labor costs.

Why Choose Us
Dorman’s reputation for automotive parts excellence backs this bypass pulley. Each unit is manufactured using precision‑molded components that resist wear and corrosion, extending service life even under high‑temperature engine conditions. Our rigorous testing protocols verify fit, balance, and durability, giving you confidence that the part will perform reliably. Additionally, the product is ready to paint, allowing seamless integration with your vehicle’s aesthetic if needed.
Key Features
- Cost‑effective solution that retains the original drive belt after compressor failure
- Durable steel construction with a ready‑to‑paint exterior for long service life
- Exact OEM fit using the same mounting points as the original A/C compressor
- Extensively tested for balance, fit, and durability to meet Dorman quality standards
- Easy installation with no special tools required, suitable for both DIY and professional shops
FAQ
Can I use this bypass pulley with any vehicle?
The pulley is compatible with vehicles that use the listed OEM part numbers. Verify your make, model, and trim using Dorman’s garage tool to ensure an exact fit.
Do I need to replace the drive belt when installing the bypass pulley?
No. The bypass pulley is designed to work with the existing drive belt, eliminating the need for a new belt unless the current one shows signs of wear.
Is the pulley ready to paint?
Yes, the exterior is coated for painting, allowing you to match the pulley to your engine bay’s color scheme if desired.
How does the installation process differ from a standard compressor replacement?
Installation uses the same mounting points as the original compressor, so you simply remove the failed compressor, attach the bypass pulley, and reconnect the drive belt.
What warranty does Dorman provide for this part?
Dorman offers a limited warranty that covers defects in materials and workmanship, providing peace of mind for your purchase.





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