{"product_id":"pai-631265-dd15-head-gasket-a4720161820","title":"PAI 631265 DD15 Head Gasket | Replaces OEM A4720161820","description":"\u003ch2\u003ePAI 631265 Cylinder Head Gasket for Detroit Diesel DD15 | Replaces OEM A4720161820\u003c\/h2\u003e\n\n\u003cp\u003e\nThe PAI Industries 631265 Cylinder Head Gasket is a premium heavy-duty replacement designed for Detroit Diesel DD15 engines. Manufactured to meet or exceed OEM specifications, this head gasket provides a reliable combustion seal while preventing coolant and engine oil leaks under the extreme temperatures and cylinder pressures found in today's heavy-duty diesel engines.\n\u003c\/p\u003e\n\n\u003cp\u003e\nBuilt with high-quality multi-layer steel (MLS) construction, the PAI 631265 is engineered for long-lasting durability and dependable sealing performance in both stock and rebuilt engines. Whether you're performing an in-frame overhaul or replacing a failed head gasket, this premium aftermarket gasket delivers the reliability professional diesel technicians demand.\n\u003c\/p\u003e\n\n\u003cp\u003e\nTrusted by fleets, owner-operators, engine rebuilders, and diesel repair facilities throughout North America, PAI Industries is recognized for producing premium heavy-duty replacement parts backed by exceptional quality and fitment.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003ePremium aftermarket cylinder head gasket\u003c\/li\u003e\n\u003cli\u003ePrecision engineered for Detroit Diesel DD15 engines\u003c\/li\u003e\n\u003cli\u003eHeavy-duty multi-layer steel (MLS) construction\u003c\/li\u003e\n\u003cli\u003eExcellent combustion sealing performance\u003c\/li\u003e\n\u003cli\u003eHelps prevent coolant, oil, and compression leaks\u003c\/li\u003e\n\u003cli\u003eManufactured to meet or exceed OEM specifications\u003c\/li\u003e\n\u003cli\u003eIdeal for in-frame and complete engine rebuilds\u003c\/li\u003e\n\u003cli\u003eOEM-quality fit and sealing performance\u003c\/li\u003e\n\u003cli\u003eBacked by PAI Industries quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e PAI Industries\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 631265\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Reference:\u003c\/strong\u003e A4720161820\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Cylinder Head Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Multi-Layer Steel (MLS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Detroit Diesel DD15 Engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New Premium Aftermarket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eDetroit Diesel DD15 Engines\u003c\/li\u003e\n\u003cli\u003eFreightliner Cascadia\u003c\/li\u003e\n\u003cli\u003eFreightliner Coronado\u003c\/li\u003e\n\u003cli\u003eWestern Star 4700\u003c\/li\u003e\n\u003cli\u003eWestern Star 4900\u003c\/li\u003e\n\u003cli\u003eWestern Star 5700XE\u003c\/li\u003e\n\u003cli\u003eHeavy-Duty On-Highway Trucks\u003c\/li\u003e\n\u003cli\u003eCommercial Fleet Vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eMajor Cross Reference Numbers\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eDetroit Diesel A4720161820\u003c\/li\u003e\n\u003cli\u003eDetroit Diesel A4720161520\u003c\/li\u003e\n\u003cli\u003eDetroit Diesel A4720162220\u003c\/li\u003e\n\u003cli\u003ePAI 631265E\u003c\/li\u003e\n\u003cli\u003ePAI 631375 (Head Gasket Set)\u003c\/li\u003e\n\u003cli\u003eInterstate-McBee A-A4720161820\u003c\/li\u003e\n\u003cli\u003eInterstate-McBee A-A4720161520\u003c\/li\u003e\n\u003cli\u003eInterstate-McBee A-A4720162220\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhy Replace Your Head Gasket?\u003c\/h3\u003e\n\n\u003cp\u003e\nA damaged cylinder head gasket can lead to compression loss, coolant contamination, overheating, excessive exhaust pressure, coolant consumption, and catastrophic engine damage if left unrepaired. Replacing the head gasket with a premium-quality component helps restore proper engine sealing and reliability while protecting your investment.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWhenever replacing a DD15 head gasket, inspect the cylinder head for flatness, check the engine block deck surface, replace torque-to-yield head bolts if required, and follow Detroit Diesel torque specifications and tightening procedures for proper installation.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cdiv style=\"background:#f8f8f8;padding:25px;border-left:4px solid #ff6a00;margin:25px 0;\"\u003e\n\u003ch3\u003e🔥 High Conversion Add-On: Complete Your DD15 Engine Rebuild\u003c\/h3\u003e\n\n\u003cp\u003e\nReplacing a head gasket is the perfect time to inspect or replace related engine components. Completing the repair with new seals, head bolts, thermostats, water pump, filters, and coolant can reduce future downtime and improve long-term reliability.\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e✔ Premium MLS Construction\u003c\/li\u003e\n\u003cli\u003e✔ OEM Fit \u0026amp; Performance\u003c\/li\u003e\n\u003cli\u003e✔ Designed for Detroit DD15 Engines\u003c\/li\u003e\n\u003cli\u003e✔ Ideal for In-Frame Overhauls\u003c\/li\u003e\n\u003cli\u003e✔ Heavy-Duty Commercial Applications\u003c\/li\u003e\n\u003cli\u003e✔ Trusted by Professional Diesel Technicians\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003cdiv style=\"background:#fff7ef;padding:20px;border:1px solid #ffb366;border-radius:8px;margin-top:20px;\"\u003e\n\u003ch3\u003e🚛 Frequently Purchased Together\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e✔ DD15 Head Bolt Kit\u003c\/li\u003e\n\u003cli\u003e✔ Complete DD15 Head Gasket Set\u003c\/li\u003e\n\u003cli\u003e✔ DD15 Water Pump\u003c\/li\u003e\n\u003cli\u003e✔ DD15 Thermostat Kit\u003c\/li\u003e\n\u003cli\u003e✔ Donaldson P551005 Oil Filter\u003c\/li\u003e\n\u003cli\u003e✔ DD15 Coolant \u0026amp; Service Kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eComplete your repair with new head bolts, cooling system components, and preventive maintenance parts to maximize engine reliability and reduce repeat labor.\u003c\/strong\u003e\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"PAI Industries","offers":[{"title":"Default Title","offer_id":67011693609005,"sku":null,"price":649.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/4526\/0845\/files\/631265_01_LG.jpg?v=1783703597","url":"https:\/\/performancedieselgroup.com\/products\/pai-631265-dd15-head-gasket-a4720161820","provider":"Performance Diesel Group","version":"1.0","type":"link"}