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Holley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.
Take control of your engine's fuel delivery with these Holley Main Jets, sized at .066" (Number 66). Proper jetting is the single most important factor in carburetor performance, affecting everything from idle quality to full-throttle power. These brass jets are designed to provide the consistency and accuracy needed for high-performance applications.
Whether you are fine-tuning a classic muscle car or a modern race engine, these jets offer the reliability you need. The #66 size is a common choice for those looking to slightly richen their mixture to support increased airflow or higher compression ratios. By using genuine Holley components, you eliminate the guesswork associated with aftermarket knock-offs. These jets are sold in pairs, making it easy to service both sides of your carburetor. Don't leave performance on the table; ensure your fuel system is perfectly calibrated for your specific setup. Explore the full range of high-performance fuel system components and tuning accessories available at GGCRACING.
Other popular Holley products customers consider together:
Holley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.
Take control of your engine's fuel delivery with these Holley Main Jets, sized at .066" (Number 66). Proper jetting is the single most important factor in carburetor performance, affecting everything from idle quality to full-throttle power. These brass jets are designed to provide the consistency and accuracy needed for high-performance applications.
Whether you are fine-tuning a classic muscle car or a modern race engine, these jets offer the reliability you need. The #66 size is a common choice for those looking to slightly richen their mixture to support increased airflow or higher compression ratios. By using genuine Holley components, you eliminate the guesswork associated with aftermarket knock-offs. These jets are sold in pairs, making it easy to service both sides of your carburetor. Don't leave performance on the table; ensure your fuel system is perfectly calibrated for your specific setup. Explore the full range of high-performance fuel system components and tuning accessories available at GGCRACING.
Other popular Holley products customers consider together:
