PRODUCT DETAILS
Genuine Acura NSX Alternator Belt - 1991-2005 Manual Transmission (31110-PR7-A05)
The alternator belt is a wear item, and on a car like the NSX, it's one you want to keep fresh and keep genuine. Over time the belt cracks, glazes, and frays, and a belt that fails leaves you without charging (and without power steering or other accessories it drives) at the worst possible moment. This is the genuine Acura belt for the manual-transmission NSX, the correct 5-rib belt for both the 5-speed and 6-speed cars, so you're replacing it with the exact part Acura specified rather than a generic substitute.
When To Replace It
Belts wear whether you drive the car hard or let it sit, age and heat cycles crack and harden the rubber over time, and on an NSX that may see limited miles, the belt can age out before it wears out from use. Inspect it for cracks on the ribbed underside, glazing (a shiny, hardened surface), fraying edges, or any squealing on startup, any of those means it's time.
Replacing it is cheap insurance on an expensive car. A belt is inexpensive and straightforward to change; a belt that snaps while driving kills your charging and accessories and can strand the car, so staying ahead of it with a fresh genuine belt is simply good NSX maintenance.
The Correct Belt For The Manual NSX
Fitment matters here, so it's worth being specific.
This is the alternator belt for the manual-transmission NSX, both the 5-speed and the 6-speed cars, across the full 1991-2005 run, and it fits both the base NSX and the NSX-T. It's a 5-rib belt, the correct profile for the manual car's accessory drive. Being the genuine Acura part, it's made to the exact length, rib profile, and material spec the NSX needs, so it fits and tensions correctly and lasts, where a generic belt might be slightly off on fit or wear out faster.
Fitment
1991-2005 Acura NSX, manual transmission (5-speed and 6-speed), base and NSX-T
Part number 31110-PR7-A05. Genuine Acura. 5-rib alternator belt.
This is for the NSX owner keeping their car properly maintained who wants the genuine Acura alternator belt rather than a generic replacement, whether you're replacing a cracked or glazed belt or just refreshing it as preventive maintenance. The correct 5-rib belt for the 5-speed and 6-speed manual cars, base or NSX-T, made to Acura's exact spec. It's cheap insurance against a belt failure on a car you don't want to be stranded in. Inspect your old one, and if it's showing its age, swap in a fresh genuine belt.
Fits: 1991-2005 Acura NSX, manual transmission (5-speed and 6-speed), base and NSX-T. Part number: 31110-PR7-A05. Type: genuine Acura alternator/accessory belt, 5-rib. Function: drives the alternator and accessories. Replace when: cracked, glazed, fraying, or squealing; or as preventive maintenance. Note: for manual-transmission NSX.
1991-2005 Acura NSX