Cummins camshaft 3914638 3925582 3929038 3929885 China manufacturer supplier Cummins 4BT 4BT3.9 4D102 engine parts

◆ Product Overview
A genuine-specification, high-precision camshaft engineered for the widely used Cummins 4BT, 4BT3.9, and 4D102 series of compact diesel engines. This critical component from a certified China manufacturer serves as a direct replacement for OEM part numbers 3914638, 3925582, 3929038, 3929885, and 3929039. Manufactured to original performance standards, it restores precise valve timing and engine power for comprehensive overhauls and rebuilds in industrial, automotive, and marine applications.

◆ Manufacturer Information
✓ Manufacturer Type: China Compact Diesel Engine Parts Specialist
✓ Certification: ISO 9001:2015, IATF 16949 Certified
✓ Specialization: Cummins B-Series & 4D102 Engine Components
✓ Supply Model: Factory Direct to Global Industrial, Automotive & Marine Markets

◆ Part Number & Application
✓ OEM Part Numbers: 3914638, 3925582, 3929038, 3929885, 3929039
✓ Engine Models: Cummins 4BT, 4BT3.9, 4D102 Diesel Engines
✓ Application: Complete Engine Overhaul & Major Rebuild
✓ Primary Use: Industrial Generator Sets, Light & Medium Trucks, Marine Auxiliary Engines, Construction Equipment

◆ Product Specifications
✓ Product Type: High-Precision Engine Camshaft
✓ Condition: 100% New, Genuine Equivalent Quality
✓ Manufacturer Origin: China Precision CNC Manufacturing
✓ OEM Reference: Direct Replacement for Cummins 4BT/4D102 Series Specifications
✓ Key Feature: Precision-ground to restore original valve lift, duration, and engine performance

◆ Manufacturing Advantages
✓ 4BT/4D102 Platform Expertise: Specialized production for the globally ubiquitous Cummins 4-cylinder B-Series and 4D102 platform.
✓ Precision Grinding Technology: Utilizes advanced CNC cam grinding equipment to replicate exact OEM lobe profiles for optimal power and emissions characteristics.
✓ Material & Heat Treatment: Manufactured from high-grade alloy steel with precise induction hardening on lobes and journals for superior wear resistance.
✓ Genuine Equivalent Standard: Manufacturing processes are aligned to deliver performance matching genuine parts for reliable rebuilds.
✓ Cross-Application Reliability: Validated for use in diverse sectors from power generation to transportation.

◆ Quality Assurance Process
✓ Material certification from accredited suppliers of camshaft-grade steel.
✓ Full-profile inspection using optical comparators and CMM against genuine part specifications.
✓ Hardness testing to verify proper heat treatment depth and value on all critical wear surfaces.
✓ Surface finish and geometry analysis to ensure proper lubrication and longevity.
✓ Comprehensive dimensional and run-out inspection for perfect fitment.

◆ Supply Chain Management
✓ Production Capacity: High-volume precision line for popular engine camshafts.
✓ Lead Time: 40-50 days for precision grinding and hardening processes.
✓ Minimum Order: Competitive MOQ for automotive, industrial, and marine parts distributors.
✓ Packaging: Custom protective packaging to prevent damage to precision-ground lobes and journals.
✓ Logistics: Efficient global shipping to key industrial and automotive regions.

◆ Technical Support Services
✓ Clear cross-reference guide for part numbers 3914638, 3929038, etc.
✓ Installation guidelines including timing procedure specifications.

◆ Market Applications
✓ Industrial Power Generation: Essential for overhauling 4BT-powered generator sets.
✓ Light/Medium Truck Repair: Critical component for engine rebuilds in delivery and utility trucks.
✓ Marine & Equipment Service: Key part for auxiliary engines and compact construction machinery.