BOLHOTE CAT C7 & C9 Mechanical Overhaul Kit | High-Quality Replacement Kit – Restore Engine Performance Efficiently
$15.00
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BOLHOTE CAT C7 & C9 Mechanical Overhaul Kit | High-Quality Replacement Kit – Restore Engine Performance Efficiently
$15.00
Welcome to BOLHOTE Official Store! We are a professional supplier of high-performance diesel engine and mechanical parts, dedicated to providing authentic, durable products for global customers. The BOLHOTE Mechanical Overhaul Kit is specifically designed for CAT C7 and C9 diesel engines—two reliable inline-six cylinder engines widely used in heavy-duty, industrial, agricultural and construction applications. This comprehensive and cost-effective solution is engineered to repair, rebuild and restore the mechanical performance of your C7 or C9 engine. Every kit is 100% brand-new, strictly manufactured to meet OEM standards, and comes with a 6-month warranty (covering manufacturing defects) to ensure your purchase is risk-free. It includes all essential mechanical components for a complete overhaul, ensuring seamless compatibility and efficient installation, saving you time and maintenance costs.
| 238-8091 | 243-4503 | 20R-8058 | 387-9428 | 20R-8059 | 268-9577 | 328-2586 | 20R-8071 | 10R-4761 | 20R-8056 | ||
| 241-3238 | 295-1409 | 20R-8058 | 263-8218 | 295-1411 | 387-9426 | 20R-8071 | 10R-4762 | 20R-8066 | |||
| 241-3239 | 387-9429 | 20R-8058 | 268-1835 | 295-1412 | 387-9427 | 10R-4763 | 20R-9079 | ||||
| 243-4502 | 20R-8057 | 241-3400 | 20R-8059 | 268-1836 | 295-9166 | 20R-8067 | 387-9430 | 10R-4764 | |||
| 295-1408 | 20R-8057 | 295-1410 | 20R-8059 | 268-1839 | 328-2587 | 20R-8067 | 387-9441 | 20R-8067 | 10R-7225 | ||
| 387-9430 | 20R-8057 | 328-2582 | 20R-8059 | 268-1840 | 328-2585 | 557-7627 | 20R-9079 | 20R-1260 |
| 235-5261 | 20R-8846 | 254-4330 | 267-3361 | 20R-9433 | 293-4072 | 557-7637 | 328-2573 | 387-9436 | 10R-7221 | 20R-8968 |
| 236-0957 | 10R-9002 | 254-4339 | 267-9710 | 20R-8065 | 293-4073 | 573-4231 | 328-2580 | 387-9437 | 10R-7222 | |
| 238-8092 | 20R-8065 | 254-4340 | 267-9717 | 20R-8068 | 328-2576 | 577-7633 | 387-9431 | 387-9438 | 10R-7223 | |
| 242-0857 | 20R-8065 | 265-8106 | 267-9722 | 20R-8062 | 387-9432 | 10R-2828 | 387-9432 | 387-9439 | 11R-1582 | |
| 245-3516 | 20R-8065 | 266-4446 | 293-4071 | 20R-8061 | 293-4074 | 10R-4764 | 387-9433 | 553-2592 | 20R-1917 | |
| 387-9438 | 20R-8060 | 267-3360 | 387-9434 | 20R-8063 | 328-2574 | 10R-4844 | 387-9434 | 557-7634 | 20R-8064 |
Product Core Specifications
• Brand: BOLHOTE (100% Authentic, Brand New) • Application: Specifically for CAT C7 & C9 Diesel Engines (including C7.1, C9.3 variants and serial number prefixes such as MBN, 3CS, 2KS, SRK, and other common prefixes for these engine series) • Condition: 100% Brand New (Never Used, Unopened) • Warranty: 6 Months (Covers manufacturing defects; Does not cover damage from improper installation, misuse, or natural wear) • Material: High-Strength Alloy Steel, Precision Cast Iron, Premium Viton Seals & High-Temp Gaskets (Resistant to high temperature, fuel corrosion, wear and heavy mechanical stress, adapting to the demanding operating conditions of C7/C9 engines, including high-pressure fuel systems and harsh industrial, agricultural and construction environments) • Type: Mechanical Overhaul Kit (Comprehensive package for repairing and rebuilding CAT C7 & C9 engine systems, including injector-related mechanical components compatible with their respective fuel injection systems) • Application: Used to overhaul, repair and maintain CAT C7 & C9 engines in heavy-duty trucks, agricultural machinery, construction machinery, and industrial generator sets, solving common issues like mechanical wear, oil leakage, poor fuel supply, and engine power degradation. The C7 features a 7.2L displacement with a maximum power of 300 hp (224 kW) at 1800-2200 rpm, while the C9 has a 8.8L displacement, both utilizing turbochargers and meeting EPA Tier 3, EU Stage IIIA and China Stage II emission standards[1][3].
Compatible Injectors (CAT C7 & C9 Series)
The BOLHOTE C7 & C9 Mechanical Overhaul Kit is perfectly compatible with the following CAT C7 & C9 fuel injectors, ensuring all mechanical components match precisely for optimal engine performance and fuel delivery:
• CAT C7 Injectors (Part Nos.: 10R-7225, 20R-8066, 20R-9079, 232-1198, 239-4908, 263-8218, 268-1835) • CAT C7.1 Injectors (Part Nos.: 295-1411, 328-2585, 387-9427, 557-7627, AP63948) • CAT C9 Injectors (Part Nos.: 10R-7225, 20R-8066, 20R-9079, 263-8218, 328-2585, 387-9427) • CAT C9.3 Injectors (Part Nos.: 557-7627, AP63948, 295-1411) • CAT C7/C9 Compatible Injectors (Cross Reference Nos.: 10R7225, 20R8066, 20R9079, 2638218, 2681835)[4][5].
Compatible Engines & Vehicles
This mechanical overhaul kit is specifically designed for vehicles and equipment equipped with CAT C7 & C9 diesel engines, widely used in heavy-duty, industrial, agricultural and construction applications. Compatible engines and models include:
• Engines: CAT C7 Diesel Engines (7.2L displacement, 225-300 hp), CAT C7.1 Diesel Engines, CAT C9 Diesel Engines (8.8L displacement), CAT C9.3 Diesel Engines, including models meeting EPA Tier 3, EU Stage IIIA and China Stage II emission standards[1][3] • Heavy Trucks: Class 7-8 Trucks, Vocational Trucks, Dump Trucks, Refuse Trucks (Peterbilt, Kenworth, Freightliner, CAT On-Highway Trucks) Equipped with C7/C9 Engines • Construction Machinery: CAT Excavators, Loaders, Bulldozers, Cranes, Compactors, Rollers and Other Heavy Machinery Powered by C7/C9 Engines[2][6] • Agricultural Machinery: Large Tractors, Combines, Harvesters, Chippers/Grinders, Forklifts, Specialty Ag Equipment, Sprayers and Trenchers with C7/C9 Engines[1][3][6] • Industrial Equipment: C7/C9-Powered Diesel Generator Sets (Commercial/Industrial Use, Standby Power), Compressors, Pumps, Hydraulic Power Units, and Stationary Industrial Machinery[1][2][3] • Other: Aircraft Ground Support Equipment, Bore/Drill Rigs, Forestry Equipment (Feller Bunchers, Skidders), Mining Equipment and Underground Mining Equipment Equipped with CAT C7/C9 Engines[1][3].
Key Advantages of BOLHOTE CAT C7 & C9 Mechanical Overhaul Kit
✅ Authentic BOLHOTE Brand: 100% brand-new, no counterfeits, strict factory quality inspection to ensure component compatibility and stable mechanical performance, matching the reliability of CAT C7/C9 engines. ✅ Comprehensive Component Set: Includes all essential mechanical parts (main/rod bearings, pistons, piston rings, wrist pins, head gasket set, liner kits, injector O-rings, thrust washers, rocker cover gaskets, oil pan gaskets, valve stem seals, and other overhaul accessories) to address common C7/C9 engine issues, following OEM overhaul standards and covering all components needed for a full rebuild[2][6]. ✅ Premium Material: High-strength alloy steel and precision cast iron resist heavy mechanical stress; Viton seals and high-temp gaskets resist high temperature and fuel corrosion, ensuring long service life in harsh working environments where C7/C9 engines operate, including high-pressure fuel systems and extreme temperature conditions. ✅ 100% Factory Tested: Each component in the kit undergoes strict quality, sealing and mechanical performance testing before leaving the factory, ensuring no defects and seamless fit with CAT C7 & C9 engines, including compatibility with their respective fuel injection systems. ✅ 6-Month Warranty: We provide a 6-month warranty for all BOLHOTE C7 & C9 Mechanical Overhaul Kits. For manufacturing defects, we offer free replacement or full refund. ✅ Cost-Effective Solution: Restores C7/C9 engine performance at a fraction of the cost of replacing the entire engine, reducing maintenance costs and equipment downtime, ideal for fleets, industrial operators, agricultural users and construction companies[2]. ✅ Easy to Use: Designed for professional mechanics, with precise-fit components that require no modifications, enabling quick and efficient overhaul of CAT C7 & C9 engines, aligning with factory disassembly and assembly standards.
Package Included
1 × BOLHOTE CAT C7 & C9 Mechanical Overhaul Kit (Including: 6× liner kits with O-rings, 6× pistons with crowns and skirts, 6× piston ring sets, 6× piston pins & retainers, main/rod bearing sets, thrust washer set, head gasket set, injector O-rings, rocker cover gasket, oil pan gasket, precision O-rings, control valve gaskets, valve stem seals, and all necessary overhaul components for CAT C7 & C9 engines and compatible injectors, following OEM kit specifications[2][6]).
Installation & Usage Tips
1. Please confirm your engine model (CAT C7 or C9) and injector model before purchasing to ensure full compatibility with the overhaul kit, especially checking the engine serial number prefix and whether it is a C7.1 or C9.3 variant. 2. Installation must be performed by professional mechanics familiar with CAT C7 & C9 engines and injector repair to avoid improper operation leading to engine or kit component damage, following factory disassembly and assembly guidelines. 3. Before installation, clean the engine cylinder block, cylinder head and injector components thoroughly to remove carbon deposits, impurities and dust, ensuring the new components fit tightly and work properly. 4. Apply appropriate engine oil or fuel system lubricant to O-rings, seals and bearings during installation to prevent damage and ensure a tight seal and smooth operation; avoid excessive use of ether (starting fluid) as it can damage pistons and rings. 5. After overhaul, test the engine for normal operation, including mechanical rotation, fuel supply, no oil leakage and stable power output; use an electronic service tool to check for any diagnostic codes if needed. 6. Do not disassemble, modify or misuse the kit components, otherwise it will damage the product and void the 6-month warranty. 7. Regular use of this overhaul kit for maintenance can extend the service life of CAT C7 & C9 engines and injectors, and improve engine performance and stability, especially for continuous-duty operations in industrial, agricultural and construction settings. 8. For cold weather operation, follow the engine’s cold start strategy to avoid engine damage, and ensure proper maintenance of turbocharger components (especially for C9 models with 250-7701, 216-7815 or 358-4924 turbochargers)[4].