PRODUCT DETAILS
Honda OEM Water Pump - K20A3 / K24A1 Engines
You're doing a timing belt on your RSX Base, EP3 Civic Si, or 2nd gen CR-V and you need to decide if you're replacing the water pump. Here's the answer. Replace it. The water pump's driven by the timing belt. You've already got the timing belt off. You've already pulled the covers and the crank pulley. The water pump's right there staring at you. Honda recommends replacing the water pump every time you do a timing belt because the labor's already done. If you skip the water pump now and it fails in 20,000 miles, you're doing this whole job again. We've seen water pumps leak from the weep hole. We've seen bearings seize and shred the timing belt. We've seen people skip the water pump to save money and then they're back in there six months later replacing it. Don't be that person. This is genuine Honda OEM part 19200-PNA-003. It's the correct water pump for the K20A3 and K24A1. The impeller's the right size. The seal's the right material. The bearing's rated for 100,000 miles. Replace it now while you're in there.
Here's Why Water Pumps Fail
Water pumps fail because they're constantly spinning. The K20A3 and K24A1 water pump is driven by the timing belt. The pump's spinning whenever the engine's running. The bearing inside the pump is supporting the impeller shaft and dealing with side loads from the timing belt tension. Over time the bearing wears. The seal wears. The weep hole starts dripping coolant. That's the early warning sign. The weep hole's designed to leak when the seal's going bad so you know the pump's dying before it fails catastrophically. If you ignore the weep hole drip, eventually the seal fails completely. Coolant starts pouring out. The bearing gets worse. It gets noisy. It gets rough. Then it seizes. When the water pump bearing seizes the timing belt can't turn the pump. The belt jumps teeth or shreds. Your valves hit the pistons. You're looking at a bent valve job or worse. All because you ignored a weeping water pump or you skipped replacing it during the timing belt service.
You're Already In There - Replace It Now
The timing belt service on a K20A3 or K24A1 means you're pulling the valve cover, the upper timing cover, the lower timing cover, the accessory belts, the crank pulley, and the timing belt tensioner. That's hours of work. Once the timing belt's off the water pump is right there. Four bolts. You unbolt the old pump. You clean the gasket surface. You bolt on the new pump with a fresh gasket. You're adding maybe 15 minutes to the job. The water pump's the same age as your timing belt. It's got the same amount of wear. If your timing belt's at 90,000 miles and it's due for replacement, your water pump's at 90,000 miles too. Some people try to save money by skipping the water pump. They figure they'll replace it when it fails. Here's what happens. You finish the timing belt. Everything's buttoned up. Twenty thousand miles later the water pump starts leaking. Now you're pulling the timing belt off again. You're replacing the water pump. You're reinstalling the timing belt. You're paying labor twice for the same job. We've done that job so many times we're tired of telling people we told them so. Replace the water pump when you're doing the timing belt. You're already in there. Don't do it twice.
Honda OEM - Not Some Cheap Aftermarket Pump
This is genuine Honda OEM part 19200-PNA-003. It's the water pump Honda installs at the factory. The impeller's cast metal, not plastic. The bearing's a sealed double-row bearing that's rated for the full service life. The seal's the correct material that handles Honda coolant without degrading. It fits correctly. It seals correctly. It lasts. Aftermarket water pumps are cheaper. Some of them are fine. Some of them are junk. We've seen aftermarket pumps with plastic impellers that crack. We've seen pumps with weak bearings that get noisy after 20,000 miles. We've seen pumps that leak from the gasket because the casting's rough or the bolt holes don't line up right. The water pump's a critical cooling system component. You don't want to find out your cheap aftermarket pump is leaking when you're stuck on the side of the road overheating. Buy the Honda pump. It's engineered for your motor. You install it once and it lasts for the full timing belt interval. That's 100,000 miles. That's what you want.
What You Get
- Honda OEM water pump - part number 19200-PNA-003
- Driven by timing belt (replace with timing belt service)
- Genuine Honda part - not aftermarket
- Cast metal impeller, sealed bearing, correct seal material
- Replace every timing belt service (90k-110k miles)
Fits These Motors
- 2002-2006 Acura RSX Base - K20A3 engine
- 2002-2005 Honda Civic Si (EP3) - K20A3 engine
- 2002-2006 Honda CR-V - K24A1 engine
Note: Water pump for K20A3 and K24A1 engines. Driven by timing belt. Replace every timing belt service (same labor to access). Water pump failure causes coolant leaks, overheating, and potential timing belt damage if bearing seizes. Weep hole drips when seal is failing (early warning sign). Typical timing belt interval 90k-110k miles. Genuine Honda OEM part 19200-PNA-003. Cast metal impeller (not plastic). Sealed double-row bearing. Correct seal material for Honda coolant. Not aftermarket. Labor to replace water pump is same as timing belt labor (must remove timing belt to access pump). Don't skip the water pump during timing belt service.