OEM-Grade Pressure Control Valve Catch Tank with Direct Bolt-On Fitment for Cold Climate Performance
| Pack Quantity: | 1 PC | Net Weight: | 0.1 Kg |
| Material: | OEM-Grade Engineered Plastic / Metal | Engine Compatibility: | ISUZU 4HK1, 4HK1-TC, 4HK1-TCN |
| OEM Part Number: | 8970886851 / 8-97088685-1 | Vehicle Models: | ISUZU NPR, NQR, Chevrolet W-Series, GMC W-Series |
| High Light: | OEM-Grade Pressure Control Valve Catch Tank,Direct Bolt-On PCV Catch Tank,Cold Climate Performance Crankcase Breather Separator |
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The Pressure Control Valve Catch Tank with OEM numbers 8-97088685-1 and 8970886851 is a verified OEM-grade direct replacement for ISUZU NPR and NQR series trucks equipped with the 4HK1 5.2L diesel engine. This component is an integral part of the engine's Positive Crankcase Ventilation (PCV) system, functioning as an oil separator/catch tank that captures oil mist and blow-by gases from the crankcase.
- Real Shop Test Data: Precision-engineered PCV catch tank captures crankcase oil mist and regulates crankcase pressure
- Proven Durability: Built with OEM-grade materials rated for 400,000+ km under normal operation
- Installation Success Rate: 99% direct bolt-on fitment confirmed across thousands of repair orders
- OEM Cross-Reference Verified: Genuine ISUZU part number for direct factory replacement
If your PCV catch tank is failing or clogged, you may experience:
- Engine Oil Leakage from excessive crankcase pressure
- Oil Pressure Warning Light illumination
- Excessive Oil Consumption between service intervals
- Blue Exhaust Smoke from oil burning in combustion chamber
- Sludge Buildup in intake system or throttle body
| Part Number: | 8970886851 8-97088685-1 |
| Product Name: | Pressure Control Valve Catch Tank |
| Car Model: | ISUZU NPR |
| Engine Model: | ISUZU 4HK1 |
| Condition: | 100% Brand New |
Primary Applications:
| Brand | Model | Series / Chassis | Engine | Years |
|---|---|---|---|---|
| ISUZU | NPR | N-Series | 4HK1, 4HK1-TC, 4HK1-TCN | 2005-Present |
| ISUZU | NQR | N-Series | 4HK1, 4HK1-TC | 2005-Present |
| ISUZU | NRR | N-Series | 4HK1-TC | 2005-Present |
| Chevrolet | W-Series | Medium Duty Tilt Cab | 4HK1-TC | 2005-2007 |
| GMC | W-Series | Medium Duty Tilt Cab | 4HK1-TC | 2005-2007 |
Engine Details:
| Engine Code | Displacement | Fuel Type | Application |
|---|---|---|---|
| 4HK1 / 4HK1-TC / 4HK1-TCN | 5.2L (5193cc) | Diesel Turbo | NPR, NQR, NRR, Chevrolet/GMC W-Series |
- Designed specifically for ISUZU 4HK1 5.2L diesel engine family
- Fits ISUZU N-Series (NPR, NQR, NRR) and Chevrolet/GMC W-Series medium-duty tilt cab models
- Often replaced with PCV hose (8-98024-528-0) and PCV tube bracket when addressing PCV system issues
- Part of Technical Service Bulletin fix for oil seepage in extremely cold climates (-30°C / -22°F)
- Verify your vehicle's model, chassis code, and engine code (4HK1) before ordering
Our manufacturing and inspection processes ensure every catch tank meets or exceeds ISUZU OEM standards:
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify all mounting points and connections match OE blueprint standards |
| Material Composition | OEM-grade material analysis for heat resistance and durability |
| Seal Integrity Test | 100% pressure testing to guarantee zero leakage under crankcase pressure |
| Flow Capacity Test | Bench testing to verify PCV flow capacity meets OEM specifications |
| Durability Cycle Test | 500+ hour thermal and pressure cycling for long-term reliability |
| Final Assembly Inspection | 100% visual and functional inspection before packaging |
The PCV catch tank is part of the engine's crankcase ventilation system. Proper installation and hose routing are critical for correct system function.
Pre-Installation Checklist:
- Tilt the cab up for access (on cab-over models)
- Disconnect PCV hose clamp at the catch tank
- Disconnect PCV hose from catch tank and hose bracket near oil filter
- Inspect all PCV hoses for cracks, damage, or blockage
- Related parts: PCV hose (8-98024-528-0) and PCV tube bracket may need replacement
Installation Guidelines:
- Safely raise vehicle and tilt cab up (if applicable)
- Locate catch tank / pressure control valve
- Disconnect PCV hose clamp and remove PCV hose from catch tank
- Remove old catch tank from mounting bracket
- Clean mounting surface and bracket area thoroughly
- Install new catch tank from upper side, sliding down between catch tank and bracket
- Connect PCV hose to catch tank and attach hose clamp in proper position
- CRITICAL: Follow correct PCV hose routing as specified in workshop manual
- Ensure hose cutout area faces and contacts flywheel housing surface
- Tighten all mounting bolts to 19 N·m (14 lb ft)
- Close cab and start engine
- Check for proper PCV system operation and inspect for oil leaks
Maintenance Schedule:
- Inspection: Every 50,000 km / 12 months for oil leaks, PCV hose condition, and crankcase pressure
- Replacement: Immediately if failure symptoms appear
- Note: This catch tank was introduced as a cold weather fix for PCV system freeze-up issues
- Packaging: Protective packaging to prevent shipping damage
- Pack Quantity: 1 PC
- Net Weight: 0.1 kg
- H/S Code: 840999100
- Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners
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