01-05 Lexus IS300 HDS-IS300 Style Exhaust Header Gasket

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01-05 Lexus IS300 HDS-IS300 Style Exhaust Header Gasket

Direct-fit header gasket engineered for the IS300 exhaust manifold. This gasket seals the critical joint between your header and cylinder head, preventing exhaust leaks that rob power and create noise. Hard panel construction designed to handle sustained heat cycles without degradation.

âś“ Ships from FL Warehouse âś“ In-House Quality Check âś“ Direct-from-Warehouse
Key Features
  • OEM-spec fitment - Seats flush at factory mounting points, no shimming or modification needed
  • Heat-resistant construction - Withstands repeated thermal cycles without warping or leaking
  • Single gasket per order - Covers the complete header-to-head seal interface
Specs
  • Hard panel construction
  • Single gasket assembly
  • Factory fitment orientation
Whats Included
  • Header gasket
Frequently Asked Questions

Will this gasket work with an aftermarket header?

This gasket is cut for OEM header dimensions. If you're running an aftermarket header with different flange thickness or bore spacing, test-fit before installation—you may need to source a matched gasket for that specific manifold.

Do I need new hardware to install this?

The gasket itself is the seal—you'll reuse your factory header bolts and studs. Check condition of those fasteners before assembly; if they're stripped or corroded, new bolts are worth the small cost to ensure a tight clamp load.

What prep is needed before I install?

Clean both the header flange and cylinder head mating surface with a wire brush to remove old gasket material and carbon buildup. A clean, flat surface is critical for proper sealing—take time here and you won't fight leaks later.

Products received may vary slightly from images due to manufacturing tolerances or supply chain variables.

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