Clutch Pressure Plate 8-97351794-0 / 8973517940 For ISUZU 700P NPR75 NQR75 4HK1 4HE1 — Ø325 Mm Push-Type, OEM-Spec Aftermarket

The Clutch Pressure Plate with OEM references 8-97351794-0 / 8973517940 is a verified replacement clutch cover for ISUZU 700P, NPR75, and NQR75 commercial trucks equipped with the 4HK1 (5.2L) and 4HE1 (4.8L) diesel engines. This is the push-type diaphragm spring pressure plate that clamps the clutch disc against the flywheel, transmitting engine torque to the gearbox and releasing it when the pedal is depressed.

The pressure plate is defined by its 325 mm outside diameter and push-type actuation — a configuration that matches the original ISUZU 700P/NPR75/NQR75 clutch architecture. It is manufactured from metal (cast iron body with a steel diaphragm spring) and is supplied as an OEM-specification aftermarket component. Reference net weight is approximately 11.9–12 kg.

The 325 mm diameter is the defining dimensional specification. A different diameter pressure plate will not bolt to the flywheel correctly or match the clutch disc friction radius. Confirm the original pressure plate diameter before ordering.

This is a push-type pressure plate. The release bearing pushes against the diaphragm fingers to disengage the clutch. Do not substitute a pull-type cover — the release mechanism and gearbox architecture differ.

Reference data associates this pressure plate with MYY5T, MYY6Z, and MZZ6 manual transmissions used in the 700P/NPR75/NQR75 platform. Confirm the transmission code before ordering, especially for fleet applications with mixed gearbox variants.

• Diameter Verified: 325 mm — confirmed across multiple independent technical listings. One source lists 330 mm, which may reflect a different measurement convention or variant; 325 mm is the dominant specification for the 4HK1/4HE1 application.
• Actuation Type Verified: Push-Type — confirmed by “Push Type Pressure Plate Assembly” designation in supplier data.
• Material Verified: Metal — confirmed by supplier material specification.
• Weight Verified: 11.9–12 kg net weight — confirmed by independent supplier data.
• Vehicle & Engine Coverage Verified: ISUZU 700P, NPR75, NQR75 with 4HK1 and 4HE1 engines — confirmed across multiple factory-direct and technical listings.
• Gearbox Association Verified: MYY5T, MYY6Z, MZZ6 manual transmissions — confirmed by reference data for the 8973517940/8-97351794-0 application.
• Cross-Reference Density Verified: 8973517940, 8970388312, 8-97038831-2, 5-87610104-0, 5876101040, 5876101291 are consistently grouped as interchangeable or related references across multiple catalogs.
• Aftermarket Brand Cross-Reference Verified: Blue Print ADZ93222N, EXEDY ISC592, IZUMI, BVP — confirmed as aftermarket equivalents for the 325 mm ISUZU 4HK1/4HE1 clutch cover.
• Dimensions Verified (Packaging): 30 cm × 30 cm × 4.2 cm — confirmed by factory-direct data.
• Warranty Reference: 6 months (supplier reference); 1 year / 30,000 km (alternate supplier reference) — confirm tier at inquiry.
• Clutch Disc and Release Bearing NOT Included: This listing covers the pressure plate only. The clutch disc (reference 8-97362235-0 / 5-87610092-0, 325 mm, 14 spline) and release bearing are separately supplied. For a complete clutch replacement, order pressure plate, disc, and release bearing as a matched set.

• Clutch slips under load: Engine RPM rises without a corresponding vehicle speed increase, especially on inclines or under acceleration — the pressure plate diaphragm spring has lost clamping force.
• Hard or high pedal engagement: The diaphragm fingers are worn or the release mechanism is binding, requiring excessive pedal effort or a very high engagement point.
• Chatter or judder during engagement: Uneven friction surface wear or a warped diaphragm spring causes vibration when the clutch is engaged from a stop.
• Clutch drag / difficulty selecting gears: A distorted or cracked pressure plate can prevent full clutch disengagement, causing gear clash and hard shifting.
• Burning smell after normal driving: A slipping pressure plate generates excessive heat, producing a persistent burning odor even without aggressive driving.
• Visible cracks, heat discoloration, or worn friction surface: Direct inspection during gearbox removal reveals the condition — any cracking or blue heat marks indicate replacement is required.

• Diameter is the first check: This pressure plate is Ø325 mm. Confirm the original unit’s diameter — a mismatched cover will not bolt to the flywheel or match the disc.
• Push-type actuation: This is a push-type cover. Do not substitute a pull-type unit.
• Gearbox code matters: Reference data associates this cover with MYY5T, MYY6Z, and MZZ6 transmissions. Confirm the transmission code before ordering, especially for mixed-fleet applications.
• Clutch disc and release bearing are separate: For a complete clutch job, order the 325 mm, 14-spline disc (8-97362235-0 / 5-87610092-0) and the correct release bearing for the specific gearbox.

1. Confirm the required components first: Verify the pressure plate is Ø325 mm and push-type. Confirm the clutch disc (325 mm, 14-spline, 8-97362235-0 / 5-87610092-0) and release bearing references match the gearbox code.
2. Inspect the flywheel: Before installing the new pressure plate, check the flywheel friction surface for cracks, heat discoloration, or warping. A damaged flywheel must be resurfaced or replaced — installing a new pressure plate against a worn flywheel causes chatter and premature failure.
3. Clean and align: Clean the flywheel bolt holes and the pressure plate mounting surface. Use a clutch alignment tool to center the disc against the flywheel before tightening the pressure plate bolts.
4. Torque in sequence: Tighten the pressure plate bolts evenly in a cross pattern to the workshop manual specification. Uneven tightening distorts the diaphragm spring and causes clutch drag or incomplete release. Reference torque values for the 4HK1 clutch pressure plate bolts are typically in the 40–60 N·m range — confirm against the specific 700P workshop manual.
5. Check release bearing and fork: Inspect the release bearing, fork, and pivot for wear. Replace the release bearing as a matter of course during clutch service — reusing an old bearing with a new pressure plate is a false economy.
6. Verify clutch release and engagement: After reassembly, check that the clutch fully disengages (no drag with the pedal depressed) and engages smoothly without chatter.
7. Road test: Drive the vehicle through a range of load conditions, confirming no slip under acceleration and smooth engagement from a stop.

• Avoid resting your foot on the clutch pedal while driving — this causes continuous release bearing contact and premature wear.
• Do not slip the clutch excessively on inclines or when towing — excessive heat accelerates pressure plate diaphragm fatigue and flywheel damage.
• Inspect the clutch system at every major service or if pedal feel changes — slipping, chatter, or a high engagement point are early warning signs.
• Replace the pressure plate, disc, and release bearing as a set when any one component fails — mixing new and worn components leads to repeat labor and uneven wear.

• Standard packing: Neutral packaging or customer-branded packaging. Packaging dimensions reference: 30 × 30 × 4.2 cm. Bulk export carton available.
• Package contents: 1 × Clutch Pressure Plate. Clutch disc and release bearing are NOT included unless explicitly stated — confirm exact package contents at inquiry.
• Set options: Pressure plate only (standard) / complete clutch kit (pressure plate + 325 mm disc + release bearing) — specify at inquiry.
• Suitable for: ISUZU 700P / NPR75 / NQR75 clutch and gearbox repair shops, commercial truck fleet maintenance departments, driveline rebuilders, spare parts distributors, and export wholesalers.