Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping Across USA
- No EU import duties. - Ships within 3-5 business days. (USA) - Ships with 8-12 business days. (International)
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy Nascar Cup team and nearly every NHRA Pro–Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies we can give you the edge you need over the competition!
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
Frequently Asked Questions
Q: What is the purpose of the Holley 135-3 Vacuum Secondary Diaphragm?A: The Holley 135-3 Vacuum Secondary Diaphragm is designed to enhance the performance of carburetors by controlling the opening of the secondary throttle plates based on engine vacuum, allowing for improved acceleration and power delivery.
Q: Is the Holley 135-3 Vacuum Secondary Diaphragm compatible with all Holley carburetors?A: This diaphragm is specifically designed for use with Holley carburetors that feature a vacuum secondary system. Always check your carburetor model to ensure compatibility before purchasing.
Q: How do I install the Holley 135-3 Vacuum Secondary Diaphragm?A: Installation involves removing the carburetor from the engine, disassembling the secondary housing, and replacing the old diaphragm with the new Holley 135-3 unit. Ensure to follow the manufacturer’s installation instructions for the best results.
Q: What should I do if my Holley 135-3 Vacuum Secondary Diaphragm fails?A: If the diaphragm fails, you may notice poor throttle response or reduced power. It is recommended to inspect it regularly and replace it if you see signs of wear or damage. Always use genuine Holley parts for replacements.
Q: Can I use the Holley 135-3 Vacuum Secondary Diaphragm for racing applications?A: Yes, the Holley 135-3 Vacuum Secondary Diaphragm is suitable for both street performance and racing applications, providing reliability and performance improvements that can give you a competitive edge.
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