Honda B Series Oil Pump Assembly 15100-P72-A01

Honda B Series Oil Pump Assembly - 15100-P72-A01

Your B series engine's got low oil pressure or you're hearing rattling from the timing belt area and you've traced it to a failing oil pump? This is the OEM oil pump assembly for B16A2, B16A3, B18B1, B18C1, B18C5, and B20Z engines, part number 15100-P72-A01. The oil pump sits behind your timing belt and pressurizes oil throughout your engine. When the pump fails, your oil pressure drops. You're getting a rattling noise from the pump, the oil pressure light comes on, or your gauge is reading low. Low oil pressure destroys engines. Bearings start eating themselves, you're losing compression, and if you keep driving on it you're rebuilding your motor. Fresh oil pump gets your oil pressure back where it should be and keeps your engine alive.

Here's How Oil Pumps Fail

Oil pumps fail a few different ways. The most common is the gears inside wearing out from high mileage. Over 150k+ miles, the pump gears wear down and they don't move as much oil. Your oil pressure drops, especially at idle when the engine's hot. The pump can also fail if it gets starved for oil. If you're running low on oil or your oil pickup's clogged, the pump runs dry and the gears get scored. Once the gears are damaged, the pump doesn't build pressure properly. Sometimes the pump relief valve sticks and your pressure's all over the place. Any of these symptoms means your oil pump's done. Don't mess around with low oil pressure. It kills engines fast.

OEM Oil Pump vs Aftermarket

You can get cheap aftermarket oil pumps for half the price of OEM. Some work fine. Some have clearance issues, some leak, some fail in under a year. The OEM Honda oil pump is built to the same spec as what your engine came with from the factory. Proper gear tolerances, correct relief valve pressure, seals that don't leak. It costs more but you know it works. If you're pulling your timing belt off and tearing into the front of your engine to replace the oil pump, don't gamble on a cheap pump that might not last. The OEM pump's proven. Pay the extra money and know your oil pressure's solid.

Replace It During Timing Belt Jobs

If you're doing a timing belt replacement, you're already pulling the timing belt off and you've got access to the oil pump. Inspect it closely. If your engine's got high miles or you're seeing any signs of low oil pressure, replace the pump while you're in there. The pump's right there behind the timing belt. You're already doing the labor to get to it. Don't skip the oil pump and find out it's failing six months later. Then you're tearing into the engine again to replace it. If you're building a B series swap or refreshing a high-mileage motor, throw a fresh oil pump on your parts list. It's cheap insurance compared to spinning a bearing because your oil pressure dropped.

What You Get

• Honda OEM oil pump assembly (part number 15100-P72-A01)
• Complete oil pump assembly with gears and relief valve
• Pressurizes oil throughout engine
• Mounts behind timing belt
• Same pump your engine came with from the factory

Fits Your Car

• 1996-2001 Acura Integra GS/LS/RS
• 1996-2001 Acura Integra GS-R
• 1997-2001 Acura Integra Type R
• 1999-2000 Honda Civic Si
• 1994-1997 Honda Del Sol VTEC
• 1997-2001 Honda CR-V

Compatible Engines

• B16A2 (1999-2000 Civic Si EM1)
• B16A3 (1994-1997 Del Sol VTEC)
• B18B1 (1996-2001 Integra GS/LS/RS)
• B18C1 (1996-2001 Integra GS-R)
• B18C5 (1997-2001 Integra Type R)
• B20Z (1997-2001 CR-V, B series swaps)

Note: The oil pump sits behind the timing belt. To replace it, you're pulling the timing belt, crank pulley, and timing belt covers off. If you're doing a timing belt job, inspect the oil pump while you're in there. Check for oil leaks around the pump seal and listen for any rattling or grinding from the pump when the engine's running. If your oil pressure's been low or the pump's leaking, replace it. When you're installing the new pump, use a new oil pump seal. Clean the mating surfaces on the block and the pump housing. Torque the pump bolts to spec. Install a fresh timing belt, water pump, and tensioner while you're in there. Don't reuse old timing belt components when you're doing oil pump work.