Honda B17/B18A/B18C5 Exhaust Manifold Gasket 18115-P30-013

Honda Exhaust Manifold Gasket (SKU: OHA-18115-P30-013) is the OEM style seal that sits between your cylinder head and exhaust manifold. If you’ve ever heard that annoying tick at cold start or smelled exhaust in the bay, you already know why this part matters. It seals the head to manifold flange so hot exhaust stays in the runners, not blowing past the ports.

On B Series cars, this is a straight up wear item. Any time you pull the manifold, treat the gasket like a one time use part. Heat cycles crush it, clamp load changes, and a reinstalled manifold loves to find the smallest weak spot and start leaking. If you’re doing a B-Series engine gasket replacement or swapping headers on your Integra or Del Sol, don’t cheap out here.

This is the exhaust manifold gasket 18115-P30-013 that replaces older part numbers 18115 P30 003 and 18115 PR3 003. Most listings call it multi layer steel, and that matches what people expect from an Integra Type R exhaust gasket OEM or B17 exhaust gasket OEM level part. If you’re hunting a proper B18A engine gasket OEM, B18A exhaust manifold gasket, or Honda B18C5 exhaust gasket, this is the one that comes up when the port layout and bolt pattern match.

• Manufacturer part number 18115 P30 013
• SKU OHA-18115-P30-013
• Component Exhaust manifold gasket
• Installation location Cylinder head to exhaust manifold flange
• Fitment type Direct replacement
• Construction Multi layer steel
• Replaces part numbers 18115 P30 003, 18115 PR3 003
• Package contents One exhaust manifold gasket

Compatibility

• Acura Integra 1990 to 1993 with B17 or B18A applications, think Acura Integra exhaust gasket and Acura GS-R exhaust gasket fitment when the manifold matches
• Acura Integra 1994 to 1995 with B18A applications, common exhaust gasket Acura RS use case
• Acura Integra Type R 1997 to 2001 with B18C5 applications, solid Integra Type R manifold gasket and B18C5 manifold gasket replacement
• Honda Civic del Sol 1994 to 1995 on applicable manifold listings, typical Honda Del Sol exhaust gasket replacement

Installer considerations

This gasket won’t fix a warped flange or make a sketchy header fit. It also won’t change exhaust position or clearance, so you don’t deal with any geometry drama. You just need the right port shape and bolt pattern for your manifold. Clean, flat mating surfaces matter, and so does proper torque on the manifold hardware. Do that, and you get what you’re paying for, a leak free seal on your Honda B-Series exhaust gasket setup, not another weekend chasing an exhaust tick.