Acura 91-05 NSX Water Pump Assembly 19200-PR7-305/19200-PR7-A03

Genuine Acura NSX Water Pump Assembly - 1991-2005 (NA1 / NA2)

The water pump on an NSX lives behind the timing belt, which means replacing it is never a standalone job. That's exactly why it's worth doing with the genuine part and doing it at the right time. This is the factory water pump assembly, and it includes the timing cover, so you're putting the correct components back in an engine that doesn't forgive shortcuts.

Check Your Year First

The NSX changed engines partway through production, so there are two part numbers and they are not interchangeable. Match yours before ordering:

If you're unsure which engine you have, the 1997 model year is the dividing line. Confirm it before you order, because this is not a part you want to discover is wrong with the timing covers already off.

Replace It With The Timing Belt

This is the whole logic of the job, and NSX owners generally know it already, but it bears stating. The water pump sits behind the timing belt. Reaching it means removing the belt, the tensioner, and the covers, which on this engine is a serious amount of labor whether you're paying for it or spending the weekend yourself.

So the pump and the belt get done together, always. A water pump that fails between belt services means paying that labor twice, and a pump that seizes can take the belt with it, which on an interference engine is a very different repair. Do the belt, the tensioner, the idlers, and the pump as one service and close the engine up once.

The reverse is true too. If you're replacing a leaking or noisy pump, replace the belt while you're in there regardless of how many miles are on it. There's no scenario where reusing the old belt makes sense given what it took to get there.

Signs Yours Is Due

Two things to watch for. A weep or drip from the pump area, often showing as coolant staining or crust around the timing cover, means the pump seal is going. And noise from the front of the engine, a whine or growl that changes with rpm, usually points at the pump bearing.

Either one on a car that's due for timing service means it's time. And on an NSX where the mileage is low but the years are many, remember that seals and bearings age on a calendar as much as an odometer. Plenty of these cars are well under any mileage interval and still overdue by time.

Why Genuine On This Part

Given what it costs to access, this is about as clear a case for the factory part as exists. The pump has to seal reliably and spin quietly for another decade or more, and a cheap unit that fails early means doing the entire timing service again. On a car where owners keep records and keep things correct, the genuine Acura assembly is the only version of this decision that makes sense.

What's Included

• Genuine Acura water pump assembly
• Timing cover

Fitment

• 1991-1996 Acura NSX (NA1, C30A) - 19200-PR7-305
• 1997-2005 Acura NSX (NA2, C32B) - 19200-PR7-A03

Who Should Grab One

This is for the NSX owner doing timing belt service, whether that's on schedule, overdue by time rather than miles, or prompted by a leak or a noise you didn't like. It's the factory part, it comes with the timing cover, and it's the component you absolutely don't want to be replacing again in five years. Confirm your engine, order the matching part number, and do the job once.

Fits: 1991-1996 Acura NSX (NA1, C30A) and 1997-2005 Acura NSX (NA2, C32B). Part numbers: 19200-PR7-305 (NA1) and 19200-PR7-A03 (NA2). Type: genuine Acura water pump assembly. Includes: water pump and timing cover. Recommended: replace with the timing belt, tensioner, and idler pulleys.