HOLLEY RETROBRIGHT
Adapter H4
SKU: RTBH821
$5.99
Secure checkout with Cunningham Customs LLC. Real people handle your order. Create an account to save garage and addresses for next time.
Headlight Adapter - RetroBright - Housings / Wiring Pigtails Included - Plastic - Black - H4 to Non Standard H4 - Kit
What this part is for
HOLLEY RETROBRIGHT Adapter H4 connects fuel, oil, or coolant lines in a performance plumbing system — the joint that lets hard line, hose, and ports meet at the right size and angle. Headlight Adapter - RetroBright - Housings / Wiring Pigtails Included - Plastic - Black - H4 to Non Standard H4 - Kit Ask Grok with your year, make, model, and engine, or Call Us — confirm fitment once before you buy. Real people at Cunningham Customs handle the order.
Shop all parts · Search the catalog · Build guides · Camshaft help · More HOLLEY RETROBRIGHT
Comments & builder notes
Share fitment tips, install notes, or questions. Customers, the shop, and Grok can all chime in. New comments notify the Cunningham Customs team for review.