1. Core Overview & Target Application Brief

This premium spare parts catalog features OEM-matched components exclusively engineered for CAT industrial diesel engines, covering critical manifold, camshaft, flywheel, fuel line, and mounting hardware assemblies across the 7C-0067, 4N0965, 7N3079, 6I0349, and 6I0350 part families. Tailored to the specialized needs of diesel engine mechanics, heavy equipment maintenance teams, oilfield drilling operations supervisors, power generation technicians, construction fleet managers, and industrial service contractors, this parts suite directly addresses the most costly and disruptive field pain points: engine exhaust leaks, loose fastener failures, cracked manifolds, misaligned fuel lines, camshaft wear, and unplanned downtime caused by substandard or incompatible replacement parts.

2. Detailed Product & Component Specifications

This CAT engine spare parts line features heavy-duty, high-temperature resistant components built to withstand extreme operating conditions: continuous combustion temperatures up to 850°C, high-pressure fuel delivery (up to 300 bar), heavy mechanical torque loads, and exposure to diesel fuel, engine oil, and harsh outdoor environments. Each part—spanning intake/exhaust manifolds, precision gaskets, camshaft assemblies, flywheel hardware, fuel line assemblies, corrosion-resistant clamps, and high-tensile fasteners—is crafted from premium materials: ductile cast iron for manifolds, heat-resistant composite gaskets, hardened alloy steel for camshafts, and zinc-plated grade 8 steel for fasteners. All critical parts are machined to a dimensional accuracy of ±0.001 inches, ensuring direct interchangeability with original CAT engine hardware without modification.

3. Key Functional Specifications

• Manifold & Sealing Performance: Cast iron manifolds (7C-0067 series) provide uniform air/fuel distribution; multi-layer steel gaskets deliver zero-leak sealing under thermal expansion cycles, with a service life of 12,000+ operating hours.
• Camshaft & Timing Reliability: Precision-ground camshaft assemblies (4N0965 series) maintain ±0.0005 inch journal tolerance, ensuring accurate valve timing and consistent engine firing.
• Fuel Line Integrity: Custom-bent fuel line assemblies (6I0349/6I0350 series) resist vibration-induced cracking; heavy-duty clamps and lock washers prevent line movement and fluid leaks.
• Fastener Strength: High-tensile capscrews and lock nuts meet SAE Grade 8 standards, with a tensile strength of 150,000 PSI to withstand engine vibration and thermal cycling.

We supply the following spare parts:

3.1	1045283	7C-0067	Manifold	CAT
3.2	1028608	7C-0067	Manifold	CAT
3.3	1083612	7C-0067	Spacer	CAT
3.4	1299452	7C-0067	Gasket	CAT
3.5	2S3770	7C-0067	Spacer	CAT
3.6	2N2766	7C-0067	Lock Nut	CAT
3.7	5M2894	7C-0067	Washer	CAT
67.1	4N0342	4N0965	Plate	CAT
67.2	0S0509	4N0965	Bolt	CAT
67.3	1086278	4N0965	Camshaft As	CAT
67.4	1013374	4N0965	Gear Cam	CAT
67.5	1B8705	4N0965	Key	CAT
69.1	7W1250	7N3079	Flywheel A	CAT
69.2	0S1602	7N3079	Capscrew	CAT
69.3	4D3704	7N3079	Washer	CAT
87.01	4P7801	6I0349	Line As	CAT
87.02	4P7805	6I0349	Line As	CAT
87.03	4P7809	6I0349	Line As	CAT
87.04	4P7807	6I0349	Line As	CAT
87.05	4P7803	6I0349	Line As	CAT
87.06	4P7811	6I0349	Line As	CAT
87.07	5P4939	6I0349	Screw A	CAT
87.08	1W9168	6I0349	Clamp	CAT
87.09	1W9169	6I0349	Clamp	CAT
87.1	4P3677	6I0349	Clamp	CAT
87.11	4P3678	6I0349	Clamp	CAT
87.12	7C6525	6I0349	Clamp	CAT
87.13	7C6589	6I0349	Clamp	CAT
87.14	7C7747	6I0349	Clamp	CAT
87.15	7C6591	6I0349	Clamp	CAT
87.16	1012732	6I0349	Bracket As	CAT
87.17	3B4502	6I0349	Lockwasher	CAT
87.18	9N3388	6I0349	Screw-S-Lock	CAT
87.19	1247102	6I0349	Bracket As	CAT
87.2	1W9167	6I0349	Clamp A	CAT
87.21	3B4502	6I0349	Lockwasher	CAT
87.22	4B4274	6I0349	Washer	CAT
87.23	7M9831	6I0349	Screw	CAT
87.24	1177117	6I0349	Plate	CAT
88.01	4P7812	6I0350	Line As	CAT
88.02	4P7810	6I0350	Line As	CAT
88.03	4P7808	6I0350	Line As	CAT
88.04	4P7806	6I0350	Line As	CAT
88.05	4P7804	6I0350	Line As	CAT
88.06	4P7802	6I0350	Line As	CAT
88.07	5P4939	6I0350	Screw A	CAT
88.08	1W9168	6I0350	Clamp	CAT
88.09	1W9169	6I0350	Clamp	CAT
88.1	7C6591	6I0350	Clamp	CAT
88.11	7C7747	6I0350	Clamp	CAT
88.12	7C6525	6I0350	Clamp	CAT
88.13	7C6589	6I0350	Clamp	CAT
88.14	4P3677	6I0350	Clamp	CAT
88.15	4P3678	6I0350	Clamp	CAT
88.16	9N3388	6I0350	Screw-SLock	CAT
88.17	9Y3380	6I0350	Bracket	CAT
88.18	7C6528	6I0350	Bracket	CAT
88.19	9Y3357	6I0350	Clamp	CAT
88.2	1029228	6I0350	Clamp As	CAT
88.21	6H9954	6I0350	Screw	CAT
88.22	7M9831	6I0350	Screw	CAT
88.23	1012731	6I0350	Plate As	CAT
88.24	6I4811	6I0350	Damper	CAT
88.25	6I4812	6I0350	Clamp	CAT
88.26	9M2307	6I0350	Washer	CAT
88.27	7N4417	6I0350	Clamp A	CAT
88.28	6N5124	6I0350	Clamp	CAT

3. Field Fault Repair Cases (Real-World Scenarios)

3.1 Case 1: Manifold Exhaust Leak (Drilling Rig Engine)

Issue: CAT engine experienced excessive exhaust leaks and reduced power output, triggering efficiency alarms. Root cause: Degraded manifold gasket (1299452) and warped spacer due to thermal fatigue. Repair: Replaced the faulty gasket and spacers, retorqued manifold fasteners, and pressure-tested the exhaust system. Outcome: Eliminated exhaust leaks, restored engine power, and resumed normal drilling operations.

3.2 Case 2: Loose Flywheel Hardware (Power Generator)

Issue: CAT generator engine developed abnormal vibration and intermittent power loss. Root cause: Worn flywheel capscrews (0S1602) and missing lock washers, causing flywheel misalignment. Repair: Installed new capscrews and lock washers, realigned the flywheel, and verified torque settings. Outcome: Eliminated vibration, restored stable power delivery, and prevented catastrophic flywheel failure.

3.3 Case 3: Fuel Line Clamp Failure (Construction Equipment)

Issue: CAT industrial engine experienced fuel leaks and inconsistent fuel flow. Root cause: Broken fuel line clamp (1W9168) and loose self-locking screws, leading to line movement. Repair: Replaced damaged clamps and fasteners, secured fuel line assemblies, and tested for leaks. Outcome: Stopped fuel leakage, restored consistent fuel delivery, and avoided fire hazards.

4. Frequently Asked Questions (FAQ)

Question	Answer
Are these parts compatible with all CAT diesel engines?	These parts are engineered for CAT industrial engines matching the 7C-0067, 4N0965, 7N3079, 6I0349, and 6I0350 OEM part families; verify your engine’s OEM part number for perfect fitment.
What gasket part number fits the 7C-0067 manifold?	Use OEM-equivalent part number 1299452 for a precise, leak-free seal on 7C-0067 series intake/exhaust manifolds.
Do these fasteners meet industrial engine torque standards?	Yes, all capscrews, lock nuts, and washers meet SAE Grade 8 and CAT OEM torque specifications, designed for heavy-duty engine vibration and thermal loads.

5. Procurement Guidance & Call to Action

This CAT engine spare parts list serves as a dual-purpose industry resource: a strict procurement standard to guarantee part quality, OEM compatibility, and compliance with ISO 9001 and industrial engine safety standards, and a practical technical reference to resolve manifold, camshaft, fuel line, and fastener failures quickly and safely. Choosing these OEM-equivalent replacement parts minimizes unplanned equipment downtime, reduces long-term maintenance expenses, and preserves the reliable, efficient performance of your CAT industrial engines.

For all spare part inquiries, order placement, and technical verification, submit your requirements using the exact CAT OEM part numbers and component descriptions listed in this catalog. Our technical team provides specialized support to confirm part fitment, material specifications, and engine compatibility for your specific repair or overhaul needs, ensuring you receive the precise components needed to restore your CAT engine to full operational condition. Build your critical spare parts inventory today to mitigate repair delays and maintain uninterrupted engine and equipment operations.