Honda B Series Oil Strainer Gasket 15221-PW0-S01

Honda B Series Oil Strainer Gasket - 15221-PW0-S01

Rebuilding your B series or pulling your oil pump? Don't skip this part. The oil strainer gasket (part number 15221-PW0-S01) is the seal between your oil strainer and oil pump - and it's one of those two-dollar parts that destroys a two-thousand-dollar engine when you skip it. When it hardens and fails, you're not just leaking oil. You're sucking air into your oil pump, dropping oil pressure, and running your bearings dry. That kills engines fast. Replace this every time you pull your oil pan or strainer. No exceptions.

Why This Gasket Actually Matters

Your oil strainer gasket lives submerged in hot oil 24/7. It's rubber or cork, and over time it compresses, hardens, and stops sealing. Once it's gone hard, it can't seat properly against your oil strainer and oil pump mating surfaces. That gap does two bad things at once: oil leaks out of the bottom end, and air gets drawn into the oil pump pickup. Air doesn't lubricate bearings. When your oil pump starts pulling air instead of oil, your oil pressure drops and your rod bearings, main bearings, and cam journals start running metal-on-metal. If you catch a low oil pressure warning light at that point, you're already doing damage. This is a $2 part that prevents a $2,000 engine rebuild.

Replace It Every Time You're In There

Any time you drop your oil pan or pull your oil strainer, throw a new gasket in. It costs less than a coffee and takes ten seconds to swap. Reusing the old one to save a couple bucks means dropping your pan again when it leaks - and that's a full afternoon of work on the line for nothing. If you're already doing an oil pump replacement, pan gasket, or full engine rebuild, add this to your order now so it's on the bench when you need it.

Install tip: scrape any old gasket material off both mating surfaces before you seat the new one. The surfaces need to be clean and flat. Torque your oil strainer bolts to spec - under-torque and it'll leak, over-torque and you'll distort the gasket. Either way, you're dropping the pan again.

What's In The Box

• Genuine Honda OEM oil strainer gasket
• Part number: 15221-PW0-S01
• Direct fit for all B series engines listed below
• Seals oil strainer to oil pump pickup

Fits These Cars

• 1992-2001 Acura Integra RS/LS/GS/GS-R/Type R (B16, B17, B18 engines)
• 1999-2000 Honda Civic Si EM1 (B16A2)
• 1997-2001 Honda CR-V (B20B, B20Z)
• 1994-1997 Honda Civic Del Sol VTEC (B16A3)

Compatible B Series Engines

• B16A2 - Civic Si EM1
• B16A3 - Del Sol VTEC
• B17A1 - Integra GS-R (1992-1993)
• B18A1 - Integra RS/LS/GS (non-VTEC)
• B18B1 - Integra LS/GS (non-VTEC)
• B18C1 - Integra GS-R
• B18C5 - Integra Type R
• B20B / B20Z - Honda CR-V