PRODUCT DETAILS
Honda B Series Water Connecting Pipe (PN: 19505-P30-A00)
If your B Series has that annoying slow coolant smell, a crusty leak trail, or you just don’t trust 25 year old cooling parts, the Honda B Series OEM water pipe is the boring fix that actually works. This is the genuine Acura B Series water pipe and coolant connector that routes coolant between the water pump and the thermostat housing on select Honda and Acura B engines. It’s the same idea as the factory OEM B Series cooling pipe, so you get OEM fit and OEM routing instead of fighting a universal tube.
This pipe covers a bunch of common swaps and refresh jobs, including the B18B for 1996 through 2001 Integra, the B20 for the 1997-2001 CR-V, plus the B16A2 OEM coolant pipe for the 1999-2000 Civic Si and 1996-1997 Honda Del Sol VTEC. It lines up with factory mounting points, so you won’t need to bend anything or slot holes to make it behave.
We run OEM hard parts like this on our own cars when we want the cooling system to just stop being a topic of conversation. This Honda B Series coolant pipe OEM piece makes sense for stock rebuilds, swaps, or preventative maintenance, especially if you’re tired of reusing questionable old tubes. One important note, this is sold without O-rings at the water pump and thermostat housing, which is honestly fine because you should replace the seals anyway. If you want an Acura Integra OEM water pipe that fits like it should and doesn’t introduce new leaks, this is it.
Key Features
- Genuine Honda B Series OEM water pipe and coolant connector
- Part Number: 19505-P30-A00
- Connects the water pump to the thermostat housing for correct coolant routing
- Direct OEM fit for B18B, B20, B16A2 applications
- Fits 1996–2001 Acura Integra, 1997–2001 Honda CR-V, 1999–2000 Honda Civic Si, and 1994–1997 Honda Del Sol VTEC
- Correct factory style alignment so it bolts up clean and runs where it should
- Solid choice for cooling system service, engine rebuilds, and swaps
- O-rings not included, replace them separately