DTech CAT C15 Stage 3 Cylinder Head | DT2635055S3 - US Market Only The DTech CAT C15 Stage 3 Cylinder Head, part number DT2635055S3, is designed for Caterpillar C15 applications using OEM cross-reference 2635055 and provides a higher-stage replacement for demanding C15 repair and rebuild programs. Built as a new heavy-duty diesel cylinder head and cross-referenced to OEM part number 2635055, this product helps technicians source the right replacement quickly and install with confidence. Choose this CAT C15 Stage 3 cylinder head to deliver a confidence-focused upgrade path for operators who prioritize durability, availability, and long-term value. With DTech, you get better parts better value, backed by Alliant Power. DTech provides the quality you can trust stronger than before. Stag Indicator: Stage 3: Enhanced Performance (HH) – Full Inconel Build Stage Description: Built for the most severe operating conditions, this cylinder head features full Inconel intake and exhaust valves. Delivering 1.8x the tensile strength of standard valves, it provides maximum durability and extended service intervals for heavy haul trucks, high-output engines, and extreme thermal environments. Need a solution for standard duty cycles?

• DT2635055S2 - View Stage 2 (Inconel Valve Upgrade) for improved heat resistance in standard over-the-road applications.
• DT2635055S1 - View Stage 1 (Standard Replacement) for reliable, cost-conscious option for standard duty cycles.

DTech Cylinder Head Warranty Policy Statement

• DTech cylinder heads are engineered and validated for use in properly maintained engines operating within original equipment manufacturer (OEM) specifications and recommended operating conditions.
• DTech cylinder heads are backed by a 12-month, unlimited mileage warranty from the date of purchase.
• Approved warrantable claims are limited to a maximum of $1,000 per claim on labor.