Engine Parts/Engine Foundational Overhaul Kits - Oil & Gas

Products & Range Coverage
A&S MACHINERY CO., LTD. delivers an extensive inventory of specialized engine foundational overhaul kits within our oil and gas parts catalog to support diverse heavy-duty oilfield assets:
• Oil & Gas Engine Series Compatibility: Engineered for a broad range of Caterpillar oilfield engines, our parts ensure exact piston combustion chamber compression ratios, reinforced cylinder liner step heights, and bearing thicknesses to guarantee a 100% perfect match for lossless alignment and factory-grade power restoration.
• Complete Oil & Gas Foundational Overhaul Kits: 1. Core In-Frame & Overhaul Kits: High-strength steel-top composite pistons, oilfield-grade wear-resistant chrome-plated piston rings, reinforced wet liners resistant to high temperatures and sulfide corrosion, 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 chemical degradation from high-sulfur natural gas, diverse coolants, and heavy-duty lubricants; 3. Connecting Rod & Bushing Kits: High-strength oilfield rods verified through magnetic particle inspection and dynamic balancing alongside wear-resistant camshaft and small-end bushings.
• OEM & Oilfield-Grade Aftermarket: We offer certified original equipment manufacturer Caterpillar oilfield overhaul kits alongside rigorously tested aftermarket parts verified through fatigue testing in high-pressure fracking conditions, delivering exceptional operational reliability and extended service lifespan at a cost-effective price point for global oil service companies and equipment fleets.

Supply Chain & Logistics
We maintain a robust operational infrastructure designed to support global oilfield engine overhaul kit procurement through direct supply channels, delivering reliable stock availability and rapid dispatch to build trust with international energy operators.
• Massive Inventory and Precision Grouping: We maintain large-volume stock of tens of differing specifications of CAT mainstream oilfield engine overhaul kits. Backed by barcode-enabled intelligent warehousing and energy equipment parts databases, we guarantee precise matching and complete-set dispatch upon order confirmation to minimize equipment downtime in desert oilfield or remote drilling environments.
• Oilfield-Grade Anti-Sand and VCI Crated Packaging: We implement specialized industrial packaging standards for kits vulnerable to sand ingress, moisture, and corrosion, utilizing double-layer anti-sand vacuum sealing, volatile corrosion inhibitor oil film full coverage, and high-density molded foam slots for independent compartmentalization by cylinder number, protected by specialized fumigated solid wood export heavy-duty crates to ensure components do not suffer mixing, sand contamination, corrosion, or collision damage during cross-border desert land transit or storage in extreme climates.
• Consolidated Sourcing and Oilfield Base Delivery: We support overseas oil service fleets and equipment repair facilities by consolidating foundational overhaul kits alongside matching oilfield-specific high-flow fuel injectors, high-pressure oil coolers, heavy-duty water pumps, and turbochargers into precise bundled shipments, maximizing container space utilization and significantly reducing international freight costs while coordinating logistics directly with major energy bases and desert oilfield locations.

Engineering Solutions & Technical Support
Our technical framework focuses on resolving field-level operational challenges to eliminate equipment downtime, moving beyond simple parts distribution to deliver comprehensive engineering and service capabilities for oil and gas power assets.
• Application-Specific Durability Solutions: We address common field issues in specific oilfield operational environments, such as high-intensity shale gas fracking, high-sulfur natural gas byproduct combustion, or desert regions with significant dust, where standard engines experience shortened overhaul cycles, piston top erosion, or early cylinder liner wear. We also provide professional engineering upgrades, including high-heat-resistant steel-top composite pistons and anti-sulfur, anti-wear surface-coated reinforced cylinder liners.
• Troubleshooting and Maintenance Guidelines: We address common user concerns regarding engine exhaust temperature spikes, excessive crankcase pressure, surging oil consumption, or power derating under full load by providing professional diagnostic and overhaul guidance. This includes using Plastigage and external micrometers to precisely measure oil film clearance between crankshaft main journals and bearings to ensure compliance with Caterpillar oilfield specifications and prevent pressure drops, alongside emphasizing the necessity of accurately measuring piston protrusion height above the cylinder block plane to ensure correct combustion chamber compression ratios and prevent piston-to-valve contact.
• Expert Technical Support and Safety Guidelines: We provide technical documentation covering Caterpillar oilfield engine overhaul torque specification tables, connecting rod bolt step-angle tightening methods, and post-overhaul no-load and full-load test run protocols, assisting overseas oilfield technical teams in maintaining standardized installations and ensuring safety in remote field operations.

Call to Action & User Experience
Optimize your engine overhaul reliability and power 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 oilfield engine model (such as CAT 3512C PET, G3516, or 3516C), engine platform series (such as 3512, 3516, or G3500), component categories (such as oil & gas foundational kits, pistons, liners, or bearings), or original equipment manufacturer part numbers to lock onto target products instantly.
• RFQ and Oilfield Fleet Overhaul Quotation: Access our fast-response interactive channels providing one-click bill of materials uploads for oilfield engine overhaul and spare replacement lists to receive bundled assembly quotations and logistics freight estimates for global energy bases, fulfilling planned fleet overhaul and emergency spare parts reserve procurement requirements for international oil service companies and energy equipment repair facilities.
• Consultation and Support: Utilize our around-the-clock professional technical support channels staffed by senior oilfield power engineering and overhaul experts to assist overseas clients in verifying compatibility for large-scale oilfield engine configurations, including 3500 series, repair-size bearing dimensions, or gas-to-diesel conversion compatibility requirements, ensuring cross-border procurement runs error-free.