Engine Parts/Engine Overhaul Kits - On-Highway

Products & Range Coverage
A&S MACHINERY CO., LTD. delivers an extensive inventory of specialized engine overhaul kits within our on-highway parts catalog to support diverse commercial trucking, tractor, and bus applications:
• On-Highway Engine & Fleet Compatibility: Engineered for a broad range of Caterpillar highway engines, our parts ensure exact piston compression ratios, highway-optimized liner step heights, and precision bearing dimensions to guarantee a 100% perfect match for lossless alignment and factory-grade power restoration.
• Complete On-Highway Overhaul & In-Frame Kits: 1. Core In-Frame & Overhaul Kits: High-strength lightweight composite pistons, low-friction chrome-plated or ceramic-coated piston rings, precision-honed wet liners, and high-load 3-layer metal main/rod bearing sets; 2. Upper & Lower Gasket Kits: High-temperature fluoroelastomer head gaskets, oil pan seals, and valve stem seals resistant to thermal and lubricant aging; 3. Connecting Rod & Valve Train Components: Dynamic-balanced reinforced connecting rods, wear-resistant valve guides, and seat inserts.
• OEM & On-Highway Heavy-Duty Aftermarket: We offer certified original equipment manufacturer Caterpillar highway overhaul kits alongside durability bench-tested aftermarket heavy-duty parts verified through highway-load testing, delivering exceptional reliability and extended service lifespan at a cost-effective price point for global logistics fleets and repair facilities.

Supply Chain & Logistics
We maintain a robust operational infrastructure designed to support global highway truck engine overhaul kit procurement through direct supply channels, delivering reliable stock availability and rapid dispatch to build trust with international fleet operators.
• Massive Inventory and Part Cross-Reference: We maintain large-volume stock of tens of differing specifications of CAT mainstream highway engine overhaul kits. Backed by barcode-enabled intelligent warehousing and commercial vehicle parts databases, we guarantee precise matching and complete-set dispatch upon order confirmation to minimize capacity loss caused by truck downtime in repair facilities.
• Moisture-Proof and Modular Compartment Packaging: We implement specialized industrial packaging standards for kits where moisture and impact protection are critical, utilizing vacuum plastic anti-moisture shielding, high-density molded foam slots for independent compartmentalization by cylinder number, and reinforced thickened honeycomb double-layer master cartons or export wood pallets to ensure components do not suffer mixing, corrosion, or collision damage during transcontinental ocean or air transit.
• Consolidated Sourcing and Fast Hub Delivery: We support overseas fleets and repair facilities by consolidating engine overhaul kits alongside matching fuel injectors, turbochargers, oil pumps, starters, and thermostats into precise bundled shipments, maximizing container space utilization and significantly reducing international freight costs while coordinating logistics directly with major global highway logistics hubs and repair shops.

Engineering Solutions & Technical Support
Our technical framework focuses on resolving field-level operational challenges to eliminate truck downtime, moving beyond simple parts distribution to deliver comprehensive engineering and service capabilities for commercial vehicle power assets.
• Application-Specific Durability Solutions: We address common field issues in specific highway transport environments, such as heavy-load mountain climbing, high-efficiency long-haul logistics, or regions with unstable fuel quality, where engines experience shortened overhaul cycles or persistently high fuel consumption. We also provide professional engineering upgrades, including low-friction energy-saving piston rings and reinforced pistons with optimized combustion chamber designs.
• Troubleshooting and Maintenance Guidelines: We address common user concerns regarding excessive blow-by, abnormal oil consumption, oil pressure alarms, or sudden power drops by providing professional diagnostic and overhaul guidance. This includes using Plastigage and internal dial indicators to precisely measure oil film clearance between crankshaft main journals and bearings to ensure compliance with Caterpillar highway engine specifications and prevent low oil pressure, alongside emphasizing the necessity of accurately measuring cylinder liner protrusion height and block flatness to ensure correct head gasket sealing and prevent overheating or gasket failure.
• Expert Technical Support and Safety Guidelines: We provide technical documentation covering Caterpillar highway engine overhaul torque specification tables, connecting rod bolt step-angle tightening methods, and post-overhaul run-in protocols, assisting overseas truck technicians in maintaining standardized installations to ensure successful one-time repairs and reliable on-road performance.

Call to Action & User Experience
Optimize your truck engine overhaul reliability and operational performance today by utilizing our interactive tools placed across strategic positions on our platform.
• Multi-Dimensional Intelligent Search and Specification Filtering: Benefit from advanced search functions supporting fast product filtering by Caterpillar highway engine model (such as CAT 3406E, C15, or C13), vehicle application (such as on-highway truck or tractor), component categories (such as overhaul kits, pistons, liners, or gaskets), or original equipment manufacturer part numbers to lock onto target products instantly.
• RFQ and Fleet Overhaul Quotation: Access our fast-response interactive channels providing one-click bill of materials uploads for highway truck engine overhaul and spare replacement lists to receive bundled assembly quotations and logistics freight estimates, fulfilling planned fleet maintenance and emergency vehicle overhaul procurement requirements for international logistics companies and repair facilities.
• Consultation and Support: Utilize our around-the-clock professional technical support channels staffed by senior commercial vehicle engine and overhaul experts to assist overseas clients in verifying compatibility for highway engine configurations, repair-size bearing dimensions, or software and hardware compatibility across different horsepower ratings, ensuring cross-border procurement runs error-free.