
Lisle 4.5 mm Hex Bit for GM and Chrysler Idle/Mixture Screw Adjustment
$2.14
Precision-engineered 4.5 mm hex bit designed specifically for adjusting idle and mixture screws on GM and Chrysler vehicles. This durable replacement bit serves as a direct substitute for tool #55250, ensuring reliable performance for 1978 and 1979 GM models.
In Stock
Money-back guarantee
Free 30-day returns
100% Authentic
Official brand warranty
Ships from USA
Fast US warehouse dispatch
Secure checkout
256-bit SSL encrypted
We accept


Precision-engineered 4.5 mm hex bit designed specifically for adjusting idle and mixture screws on GM and Chrysler vehicles. This durable replacement bit serves as a direct substitute for tool #55250, ensuring reliable performance for 1978 and 1979 GM models.
- Specifically designed for adjusting Idle/Mixture Screws on GM and Chrysler vehicles
- Compatible with 1978 and 1979 GM models
- Direct replacement for carburetor-adjusting tool #55250
- Durable construction built for long-lasting use
- Features size etching on the bit for quick identification
