Engine Gaskets & Seals

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The best engine gaskets and seals match your exact engine, bore, and rebuild scope — a complete top-end or bottom-end kit for a full build, or a single OEM seal or washer for one leak. This collection covers both paths, with Cometic Street Pro kits for the Nissan 240SX KA24DE and genuine Subaru OEM seals for WRX and Legacy applications. Check your year and model before ordering, because gasket sets are engine-specific, not universal. Engine gaskets seal the joints between major components — head to block, valve cover to head, oil pan to block — while seals contain oil and coolant around rotating parts such as the crankshaft. Heat cycles, age, and higher cylinder pressure can cause seepage, external leaks, or, for a head gasket, internal leaks that affect compression and cooling. Decide first whether you need a kit or a single part. Top-end kits suit head work, bottom-end kits suit a full short-block refresh, and individual seals suit targeted leak repair. Confirm engine code, bore size where listed, and model years in the title. Cometic is represented by its Street Pro line, including 90mm bore top-end kits and a bottom-end kit for the 1991–1998 Nissan 240SX KA24DE 2.4L. Cometic is known in this category for multi-layer steel head gasket technology and for packaging matched sets for common performance rebuilds, so builders can source the top or bottom of the engine as one kit. The sampled top-end kits split by year — 1991–1994 and 1995–1998 — which is exactly why verifying your chassis year matters. Subaru OEM covers the factory side, with a universal rear main oil seal and a valve cover washer for the 2002–2005 WRX among the sampled parts. Factory parts are the natural choice when you want original fit for a single leak or small hardware item rather than an aftermarket kit. Match the stated years closely. Victor Reinz is the other major gasket name at JDMuscle, with full engine sets, head gasket sets, oil pan sets, and crankshaft seals for applications such as the