Exact repro. Each. 2 required. Correct flat oval wire spring with proper tension unique to Ram Air hoods. Finished in correct zinc phosphate and oil. 7 OAL. US-made.
This is a very unique spring that uses a flat oval wire that is not in common use and the material cost is 4x normal wire of a similar size. Costly special tooling was required to correctly wind the wire to have the flats lay consistently across the outside and inside diameters. This made for an expensive spring to produce. Produced using ASTM A401 CrSi carbon alloy commonly used for engine valve springs and suspension coil springs. The spring tension was fine tuned and tested for 5 days on a ram air equipped car without any relaxation in both the full up position and the lowest open position to assure the desired outcome.
Note that while the springs are zinc phosphate coated, the steel material did not take the coating as is typically seen of zinc phosphate. The springs have a slightly red tint to the darked steel.
An NPD Reproduction part.
Ford Mustang Years:
1971 (71), 1972 (72), 1973 (73)
Above years shown are used for searches and are not application listings.
NPD Part Number : 16789-5A Manufacturer Reference #'s: National Parts Depot NPD-0700-1.32-17.3w/o phosphate, D1ZZ-16789-B
1971-1973 MUSTANG W/ RAM AIR
WARNING: This product can expose you to chemicals including lead and DEHP, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
THESE SPRINGS LOOK FANTASTIC, HOWEVER I WILL NOT HAVE A CHANCE TO INSTALL FOR A FEW MONTHS. AS I LIVE IN MICHIGAN THERE IS NO REASON TO RUSH CAUSE ALL THE CARS ARE SLEEPING NOW....
Submitted on December 16, 2021 by Al P.
YES I would recommend this product.
Quality
Value
Great quality hood spring. Holds my ram air equipped hood up. Well worth the money.
Submitted on December 17, 2021 by Mike K.
YES I would recommend this product.
Quality
Value
Not install yet but look like the real deal. The only Complaint I have is $30.00 shipping on a 3 pound package
Submitted on January 20, 2022 by Brian D.
YES I would recommend this product.
Quality
Value
Great product with equal rating - Glad they are now in production. Well worth the cost against non ram air hood springs. Less than 2 weeks from ordering to receipt in NZ
Submitted on February 17, 2022 by Ross N.
Quality
Value
These work perfectly. I have a 1973 Mach 1 and the previous owner installed a ram air hood but didn’t upgrade the springs, so we’ve been propping the hood up since we got it. The springs have put an end to that.
Submitted on September 01, 2022 by Jonathan g.
YES I would recommend this product.
Quality
Value
They are expensive and should be sold as a pair. They are the correct OEM looking springs for the NASA hood.
Submitted on May 20, 2023 by Stephen G.
YES I would recommend this product.
Quality
Value
Submitted on August 24, 2023 by Edward E.
YES I would recommend this product.
Quality
Value
Submitted on November 13, 2023 by Derek J.
YES I would recommend this product.
Quality
Value
this is an excellent product the only spring that will hold up a mach1 w/ram air plenum hood
Submitted on February 27, 2024 by Jack W.
YES I would recommend this product.
Quality
Value
In Stock!
