ISUZU NPR NQR Engine Oil Filter with 22-Micron Filtration 19 PSID By-Pass Valve and 320 PSI Burst Pressure
| Outer Diameter: | 118.3 Mm (4-21/32") | Media: | Enhanced Cellulose |
| Net Weight: | Approx. 0.8 Kg | Filter Type: | Dual-Flow Lube Spin-On |
| By-Pass Valve: | 19 PSID | Burst Pressure: | 320 PSI |
| Thread Size: | 1-1/2"-12 UNF | Filtration Rating: | 22 Microns |
| High Light: | 22-Micron Filtration Engine Oil Filter,19 PSID By-Pass Valve Oil Filter,320 PSI Burst Pressure Dual-Flow Lube Spin-On Filter |
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Engine Oil Filter 8-97148270-0 8971482700 for ISUZU NPR NQR NKR ELF 4HK1 4HF1 4HE1 — Verified OEM Fit Dual-Flow Lube Spin-On Filter
This engine oil filter with OEM numbers 8-97148270-0 and 8971482700 is a verified direct-fit replacement for ISUZU NPR/NQR/NKR/ELF/Forward/FSR/FRR series light and medium-duty trucks equipped with 4HK1/4HF1/4HE1/4HG1/4BD1 diesel engines. This critical engine protection component removes harmful contaminants from engine oil, ensuring proper lubrication and extending engine service life.
This dual-flow lube spin-on filter combines full-flow and by-pass filtration functions within a single canister. The full-flow section filters the entire oil flow before it reaches engine bearings, while the by-pass section provides finer filtration (down to 10 microns or smaller) for superior overall oil cleanliness. The filter features a 19 PSID by-pass valve that opens if the filter becomes clogged, ensuring uninterrupted oil flow to protect the engine from oil starvation. Manufactured with an integral gasket and 1-1/2"-12 UNF thread for secure spin-on installation.
Replace the engine oil filter at the recommended interval or when any of these symptoms appear:
- Oil pressure warning light illuminates — clogged filter restricts oil flow, causing low oil pressure
- Engine knocking or unusual noise — insufficient lubrication from restricted filter
- Dark, gritty engine oil — filter not removing contaminants effectively
- Increased engine operating temperature — reduced oil flow to oil cooler
- Oil leaks at filter mounting surface — deteriorated or improperly seated gasket
| Verification Item | Data / Standard | Source / Method |
|---|---|---|
| Part Number (Short) | 8-97148270-0 | ISUZU OEM Parts Database |
| Part Number (Long) | 8971482700 | ISUZU OEM Parts Database |
| Vehicle Models | ISUZU NPR/NQR/NKR/ELF/Forward/FSR/FRR | ISUZU application catalog |
| Engine Compatibility | 4HK1/4HF1/4HE1/4HG1/4BD1/4BE1 | ISUZU application catalog |
| Filter Type | Dual-Flow Lube Spin-On | Baldwin BD7169 specification |
| Thread Size | 1-1/2"-12 UNF | Baldwin BD7169 specification |
| Outer Diameter | 118.3 mm (4-21/32") | Baldwin BD7169 specification |
| Height | 125.4 mm (4-15/16") | Baldwin BD7169 specification |
| By-Pass Valve Setting | 19 PSID | Baldwin BD7169 specification |
| Burst Pressure | 320 PSI | WIX 57521 specification |
| Flow Rate | 28-30 gpm | WIX 57521 specification |
| Filtration Micron Rating | 22 microns | WIX 57521 specification |
| Certification | ISO/TS 16949 | Third-party system audit |
| Type | Number |
|---|---|
| Primary OEM — Short | 8-97148270-0 |
| Primary OEM — Long | 8971482700 |
| Alternate Format | 8-97148-270-0 / 8-97148-270-1 |
| Consecutive / Replacement | 8-97371-334-0 |
| Consecutive / Replacement | 8-97136-470-0 |
| Consecutive / Replacement | 8-97096-777-0 |
| Consecutive / Replacement | 8-94338-181-2 / 8-94338-181-3 / 8-94338-181-1 |
| Related OEM (GMC) | 97148270 |
| Competitive Cross-Reference | Baldwin BD7169, WIX 57521, Fleetguard LF3854/LF3807, P502042, MANN W1228, Hengst H346W, Febi 47472, Blue Print ADZ92123, Sakura C-1542, UFI 23.577.00, Ryco Z767 |
| Part Number: | 8-97148270-0 8971482700 | Product Name: | Engine Oil Filter |
| Car Model: | NPR NQR | Engine Model: | NPR NQR |
| Condition: | 100% Brand New | Size: | Standard |
| Origin: | China Mainland | Main Market: | Middle East, Asia, Africa, South America, North America & Europe |
| Material: | High-strength aluminum alloy & precision bearings | Cooling Type: | Engine coolant circulation |
| Installation: | Direct OEM replacement | Quality Standard: | OEM equivalent / ISO quality control |
Primary Applications:
| Brand | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| ISUZU | NPR | NPR70/NPR71/NPR75 | 4HK1/4HF1/4HE1 | 1998-2016 |
| ISUZU | NQR | NQR70/NQR71/NQR75/NQR90 | 4HK1/4HF1/4HE1 | 1998-2016 |
| ISUZU | NKR | NKR66/NKR71/NKR77 | 4HF1/4HG1/4HK1 | 1994-2007 |
| ISUZU | ELF | Various N-Series | 4HE1/4HF1/4HK1 | 1994-2016 |
| ISUZU | Forward | FRR/FSR/FSS | 4HK1/4HF1 | 1990s-2010s |
Non-ISUZU Applications (Same Platform):
| Brand | Model | Application |
|---|---|---|
| Chevrolet | W3500/W4500/W5500 | Light Truck |
| Chevrolet | LCF 4500HD/5500HD/6500XD | Light Truck |
| GMC | W3500/W4500/W5500 | Light Truck |
| GMC | 97148270 | Light Truck |
- This oil filter is designed for the 4HK1/4HF1/4HE1/4HG1/4BD1 engine family. Confirm your specific engine model before ordering.
- The 8-97148-270-1 is the updated version of the same filter. The 8-97371-334-0 and 8-97136-470-0 are interchangeable OEM numbers.
- The 8-94338-181-2/8-94338-181-3/8-94338-181-1 are also compatible with this filter.
- The Baldwin BD7169 and WIX 57521 are equivalent aftermarket filters with the same specifications.
- For right-hand drive (RHD) vehicles, verify clearance and filter orientation.
Combines full-flow and by-pass filtration in one canister for superior oil cleanliness
Removes harmful contaminants that standard full-flow filters miss
Ensures uninterrupted oil flow even if the filter becomes clogged
Withstands extreme oil system pressures for reliable operation
Maintains adequate oil flow to engine bearings under all operating conditions
Matches OEM thread specification for secure, leak-free installation
Full traceability with material certificates and batch inspection reports
| QC Item | Verification Method / Standard |
|---|---|
| Thread Size (1-1/2"-12 UNF) | Thread gauge, 100% inspection |
| Outer Diameter (118.3 mm) | CMM, 100% inspection |
| Height (125.4 mm) | CMM, 100% inspection |
| By-Pass Valve Opening Pressure (19 PSID) | Pressure test, 100% inspection |
| Burst Pressure (320 PSI) | Burst test, batch sampling |
| Filtration Efficiency (22 microns) | Particle count test, batch sampling |
| Flow Rate (28-30 gpm) | Flow bench test, 100% inspection |
| Media Integrity | Visual + pressure decay test, 100% inspection |
| Gasket Dimensions | CMM, 100% inspection |
| Surface Finish | Visual inspection — no dents, no corrosion |
| Batch Traceability | Material lot number + production date |
| Packaging Protection | Shrink wrap + carton |
Installation Guidelines — Reference ISUZU Workshop Manual
- Preparation: Warm the engine to operating temperature, then shut it off. Place a drain pan under the oil filter. Wear gloves and eye protection.
- Removal: Use an oil filter wrench to loosen the old filter. Turn counterclockwise to remove. Allow the oil to drain from the filter mounting surface.
- Inspection: Clean the filter mounting surface on the engine block. Inspect the threaded stud for damage. Check the old filter gasket for proper seating.
- Preparation for New Filter: Apply a light coat of clean engine oil to the new filter's gasket. This ensures a proper seal and makes removal easier next time.
- Installation: Thread the new filter onto the mounting stud by hand. Turn clockwise until the gasket contacts the mounting surface. Then tighten an additional 3/4 to 1 full turn by hand. Do not use a filter wrench to tighten — this can damage the gasket or over-tighten the filter.
- Refill: Remove the oil fill cap and add the specified amount of engine oil. Check the oil level with the dipstick.
- Final Check: Start the engine and let it run for a few minutes. Check for oil leaks at the filter mounting surface. The oil pressure warning light should go out within a few seconds.
- Disposal: Dispose of the used oil and filter in accordance with local environmental regulations.
Recommended Torque Values:
| Fastener | Torque |
|---|---|
| Oil Filter | Hand-tight (3/4 to 1 turn after gasket contact) |
| Oil Pan Drain Plug | Per ISUZU workshop manual specification |
Maintenance Schedule
- Every 10,000-15,000 km or 12 months: Replace the engine oil filter and engine oil. ISUZU N-Series trucks typically require filter replacement at this interval.
- Every 40,000-50,000 km: Inspect the filter mounting area for leaks or damage. Check the by-pass valve function.
- When oil pressure warning light illuminates: Inspect the filter immediately. Replace if clogged.
- When engine oil appears dark or gritty: Replace the filter and oil immediately.
- Before long trips or heavy-duty use: Ensure the filter is in good condition and within its service interval.
- Standard Packaging: Shrink wrap + neutral carton
- Custom Packaging: Neutral box, color box, or customer-branded packaging
- Suitable For: Engine repair shops, ISUZU parts distributors, fleet maintenance centers, heavy-duty truck service centers
- Supply Capacity: Stable batch supply with batch-level quality reports available
- Minimum Order Quantity: 20 PCS
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