Rocker Arm 8-97306421-0 8973064210 For ISUZU FVR34 6HK1 Engine Isuzu Truck Parts

The Rocker Arm (OEM Numbers: 8-97306421-0 / 8973064210) is a premium-quality, direct replacement engine valvetrain component designed specifically for ISUZU FVR34 series heavy-duty trucks equipped with 6HK1 diesel engines. This precision-engineered rocker arm transmits motion from the camshaft to the valve stem, opening and closing intake and exhaust valves at precisely timed intervals to ensure optimal engine breathing, combustion efficiency, and power output.

• OE Quality: Manufactured to strict ISUZU dimensional and material specifications for perfect fit and function
• High-Strength Construction: Forged or cast alloy steel withstands high cyclic loads and extreme temperatures
• Hardened Contact Pad: Wear-resistant surface ensures long service life and consistent valve actuation
• Precision Machining: Exact tolerances for shaft bore, pushrod cup, and valve contact pad ensure smooth operation
• Restores Valve Train Performance: Eliminates excessive lash, noise, and loss of valve lift caused by worn rockers
• Direct Replacement: Matches OE rocker arm dimensions and mounting configuration
• Essential for Overhaul: Critical component to replace during top-end engine rebuilds or valve service

This rocker arm is specifically designed for ISUZU heavy-duty trucks and industrial equipment:

• ISUZU FVR34 (Heavy-Duty Trucks)
• ISUZU FC, FG, FR series (as applicable)
• ISUZU 6HK1 Engine Specifications:
  • 6-Cylinder, Inline Diesel
  • Displacement: 7.8L
  • Valvetrain: OHV
  • Application: Heavy-duty trucks, buses, and industrial equipment
• Industrial Applications: Generators, construction machinery, and agricultural equipment utilizing 6HK1 engines

Professional mechanic or engine builder installation recommended:

1. Remove the valve cover - Unbolt and remove the valve cover to access the rocker assembly
2. Loosen valve adjusting screws - Back off all valve lash adjusters to release pressure on the rocker arms
3. Remove the rocker shaft assembly - Unbolt the rocker shaft brackets and lift the complete assembly
4. Disassemble rocker arms - Remove the rocker arm(s) from the shaft, noting the order and orientation
5. Inspect all components - Check the rocker shaft, pushrods, valve stem tips, and adjusting screws for wear or damage
6. Clean all parts - Clean the rocker arm and shaft; remove old oil and debris
7. Lubricate new rocker arm - Apply clean engine oil or assembly lube to the shaft bore and contact surfaces
8. Install new rocker arm - Slide the new rocker arm onto the shaft in the correct position and orientation
9. Reassemble rocker shaft assembly - Install all rocker arms, springs, and brackets in the correct order
10. Install shaft assembly - Position the assembled rocker shaft on the cylinder head; align mounting brackets
11. Torque bracket bolts - Tighten mounting bolts to manufacturer torque specifications in the correct sequence
12. Adjust valve clearances - Set valve lash (clearance) per manufacturer specifications using a feeler gauge
13. Reinstall the valve cover - Install a new gasket and reinstall the valve cover with proper torque
14. Start and test - Start the engine; listen for abnormal valvetrain noise; recheck clearances if necessary

• Material Verification: Confirms housing and seal materials meet fuel compatibility and durability specifications
• Pressure Testing: Each unit tested for leak-proof integrity under operating fuel pressure
• Filtration Efficiency: Verified to meet OE water separation and particulate removal standards
• Dimensional Inspection: Inlet/outlet ports, mounting holes, and overall dimensions checked for exact fit
• Visual Inspection: 100% checked for casting defects, cracks, seal integrity, and bowl clarity
• Packaged Safely: Protected and boxed to prevent damage during transit

• Neutral export packing or customized packaging available
• Carton or wooden case for safe transportation
• Fast delivery for stock items
• Shipping by Express Air or Sea