{"product_id":"walker-18403-exhaust-muffler","title":"Walker 18403 Exhaust Muffler","description":"\u003ch2\u003eWalker SoundFX Direct Fit Muffler for OE-Style Replacement\u003c\/h2\u003e\u003cp\u003eWalker SoundFX Direct Fit muffler Part Number 18403 is a specific-fit exhaust muffler built for select Jeep Comanche and classic Cadillac applications. It uses an oval steel body with an aluminized finish to support longer service life than low-carbon steel, while maintaining a clean appearance and controlled exhaust tone.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect-fit exhaust muffler for specific vehicle applications\u003c\/li\u003e\n\u003cli\u003eOval muffler body with 2.25-inch inlet and 2.25-inch outlet\u003c\/li\u003e\n\u003cli\u003eOffset inlet and center outlet configuration\u003c\/li\u003e\n\u003cli\u003e100% aluminized steel construction for improved corrosion resistance\u003c\/li\u003e\n\u003cli\u003eMechanical interior joints and spun-locked heads for added durability\u003c\/li\u003e\n\u003cli\u003eCombination muffler design for balanced exhaust flow and sound control\u003c\/li\u003e\n\u003cli\u003eWalker SoundFX Direct Fit line focused on OE-style fit and acoustics\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eWalker SoundFX Direct Fit Part Number 18403 is engineered as a replacement exhaust muffler for vehicles that require a 2.25-inch pipe connection. The oval body measures 21 inches overall, with a 17-inch body length, 9.75-inch body width, and 4.25-inch body height. Its offset inlet and center outlet layout supports the factory-style routing used on the listed applications. This muffler is a practical choice for drivers servicing a 1986-1992 Jeep Comanche with catalytic converter, as well as 1965-1967 Cadillac DeVille and 1965-1967 Cadillac Fleetwood models. This part cross-references AP Exhaust 700045 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Problems This Muffler Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExhaust noise from a worn or rusted muffler\u003c\/li\u003e\n\u003cli\u003eCorrosion-related failure in the original muffler body\u003c\/li\u003e\n\u003cli\u003eFitment issues caused by non-specific universal replacements\u003c\/li\u003e\n\u003cli\u003eLoss of factory-style exhaust tone after muffler damage\u003c\/li\u003e\n\u003cli\u003eReplacement needs on Jeep Comanche and Cadillac DeVille or Fleetwood exhaust systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eFits 1986-1992 Jeep Comanche, N\/A, with catalytic converter; if welded assembly, replace all required parts. Fits 1965-1967 Cadillac DeVille, N\/A. Fits 1965-1967 Cadillac Fleetwood, N\/A. Verify inlet and outlet diameter, offset, and center configuration before installation to confirm alignment with the existing exhaust system. Because this is a specific-fit muffler, matching the vehicle application and pipe routing is important for proper installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker SoundFX Direct Fit mufflers use aluminized steel construction, mechanical interior joints, and spun-locked heads to support durability in everyday exhaust service. The SoundFX Direct Fit line is built to provide OE-style appearance and controlled acoustics for the listed applications.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":52071720779957,"sku":"BDCN-18403","price":55.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/WK_18403_Fro.jpg?v=1775141919","url":"https:\/\/www.partcatalog.com\/products\/walker-18403-exhaust-muffler","provider":"PartCatalog","version":"1.0","type":"link"}