Copper Auto Radiator 8-97177193-0 / 8971771930 For ISUZU NPR NQR 4HG1 4HF1 — Copper Core, 530×490 Mm, OEM-Spec Replacement

The Copper Auto Radiator with OEM references 8-97177193-0 / 8971771930 is a verified replacement cooling system component for ISUZU NPR and NQR commercial trucks equipped with the 4HG1 (4.6L) and 4HF1 (4.3L) diesel engines, covering the 1993–2010 production span. This radiator is the primary heat exchanger responsible for dissipating engine heat from the coolant to the atmosphere, maintaining stable operating temperature under the demanding load cycles of commercial truck duty.

This listing specifically covers the Copper / Brass core version of the radiator, offering a repair-friendly and durable alternative to the aluminum-plastic composite radiators used on later production runs. The copper/brass construction provides excellent thermal conductivity and allows for repairable leaks — a significant advantage in fleet operations where replacement cost and downtime are critical factors. The radiator is supplied as a complete assembly with the core and tanks, ready for installation.

Copper vs. aluminum core, core dimensions, and transmission configuration are the three variables that determine correct fitment. Confirm each before ordering.

This listing covers the Copper / Brass core radiator. Later OEM production and many aftermarket alternatives use an aluminum core with plastic tanks (aluminum-plastic composite). Copper/brass offers repairability (solder repair of leaks) and proven thermal performance; aluminum-plastic offers lighter weight and lower initial cost but is generally not repairable if the core or tank seal fails. Confirm the required core material with the customer before ordering.

The dominant core size for the 4HG1/4HF1 NPR/NQR application is 530 × 490 mm. One reference also lists a 590 × 548 × 36 mm core for a related NPR application — this is likely a different variant or model year. Measure the original radiator's core and overall dimensions before ordering; a mismatched core will not fit the mounting brackets or fan shroud.

The NPR/NQR platform was offered with both manual (MT) and automatic (AT) transmissions. Reference data distinguishes between manual MTM and automatic ATM radiator variants for the 1996–2005 NPR71 platform. Confirm the transmission type — the radiator may differ in the integrated transmission oil cooler provision or the bottom tank configuration.

• OE Reference & Core Material Verified: 8-97177193-0 / 8971771930 is confirmed as a Copper Auto Radiator for ISUZU NPR / 4HG1 across multiple independent supplier catalogs. One source explicitly identifies it as "Copper OEM No. 8971771930 8 97177193 0" for NPR NQR ISUZU 4HF1 4HG1.
• Core Dimensions Verified (Variant-Dependent): 530 × 490 mm is the dominant core size for the 4HG1/4HF1 NPR/NQR application. 67 × 64 × 15 cm is listed as the natural/overall size for the copper auto radiator. A 590 × 548 × 36 mm core is also referenced for related NPR applications — confirm the specific variant against the original unit.
• Vehicle & Engine Coverage Verified: ISUZU NPR, NQR with 4HG1, 4HF1, 4HG1-T engines — confirmed across multiple factory-direct and technical listings. 1993–2010 and 1996–2005 production windows are both referenced.
• Cross-Reference Density Verified: 8971771930, 8-97177193-0, 8973710110, 8-97177193-1, 8971771931, 8-97177193-CHM are consistently grouped as interchangeable or related references across multiple catalogs.
• Copper/Brass Advantages Documented: Copper/brass radiators offer greater cooling efficiency per unit volume and easier leak repair compared with aluminum cores. The trade-off is higher weight and generally higher initial cost — an important consideration for fleet vs. budget-focused buyers.
• Factory Number Verified: 8-97177193-CHM is the factory/tooling reference for the copper auto radiator.
• Packaging Dimensions Verified: 71 × 73.5 × 19 cm (packaging size) for the copper auto radiator.
• Supply & MOQ Reference: No minimum order quantity requirement for the copper auto radiator; supply capacity 1,000 pcs/month; delivery 7–30 days.
• Transmission Configuration NOT Uniformly Specified: Reference data distinguishes MTM (manual) and ATM (automatic) radiator variants for the NPR71 platform. Confirm the transmission type — the radiator may differ in the integrated oil cooler or tank configuration.

• Engine overheating under load: The radiator cannot dissipate sufficient heat, causing coolant temperature to rise above normal operating range, especially on inclines or under heavy payload.
• Visible coolant leak from the core or tank seams: Pinholes, cracked tubes, or failed tank-to-core seals allow coolant to escape — a direct sign of radiator failure.
• Coolant loss without an external leak: A compromised internal transmission oil cooler (if equipped) can allow coolant and transmission fluid to mix, producing milky fluid or coolant contamination.
• Cooling fan running continuously: The engine control system commands maximum fan duty because the radiator is not achieving the target temperature drop.
• Discoloured or sludge-contaminated coolant: Internal corrosion or oil contamination degrades coolant condition and reduces heat transfer efficiency.
• Physical damage to the core fins: Bent, crushed, or corroded fins reduce airflow and heat dissipation capacity, even if the radiator is not leaking.

• Copper vs. aluminum-plastic is the first check: This is the Copper / Brass core version. If the customer requires a lighter, lower-cost aluminum-plastic radiator, that is a different product specification. Confirm the required material before ordering.
• Core dimensions must be verified: The dominant core is 530 × 490 mm, with an overall size of 67 × 64 × 15 cm. A 590 × 548 × 36 mm core is also referenced for related applications — measure the original radiator before ordering.
• Transmission type matters: Reference data distinguishes MTM (manual) and ATM (automatic) radiator variants. Confirm the vehicle's transmission type to ensure the radiator has the correct oil cooler provision and tank configuration.
• Vehicle coverage: Core applications are NPR and NQR with 4HG1/4HF1 engines. Provide the VIN for final confirmation in mixed-fleet applications.

1. Confirm the required part first: Verify the original radiator's core material (copper vs. aluminum-plastic), core dimensions (530 × 490 mm vs. 590 × 548 mm), and transmission type (MT vs. AT). Compare the mounting brackets and fan shroud provisions.
2. Cold engine only: Allow the engine to cool fully before opening the cooling system. Drain coolant to a level below the radiator.
3. Remove the old radiator: Disconnect the upper and lower hoses, the transmission oil cooler lines (if equipped), and the fan shroud. Unbolt the radiator from its mounting brackets.
4. Clean the mounting area: Remove debris and corrosion from the radiator support and fan shroud mounting points. Inspect the fan shroud and mounting insulators for damage — replace if cracked or deteriorated.
5. Install the new radiator: Position the 8-97177193-0 radiator into the mounting brackets. Do not fully tighten the mounting bolts until the hoses and oil cooler lines are connected — this allows slight movement for alignment.
6. Reconnect hoses and oil cooler lines: Connect the upper and lower radiator hoses and tighten the clamps. Reconnect the transmission oil cooler lines (if equipped) and tighten to specification. Use new clamps where possible — old clamps can lose tension and cause leaks.
7. Refill and bleed the cooling system: Fill with the correct coolant mixture and bleed air from the system according to the ISUZU procedure. Air pockets are a leading cause of post-replacement overheating.
8. Check for leaks and verify operation: Run the engine to operating temperature, check for leaks at the hoses, oil cooler lines, and core seams. Confirm that the cooling fan engages correctly and the temperature gauge stabilizes.

• Inspect the radiator core and fins at every coolant service or every 20,000–30,000 km — clean debris and inspect for corrosion or bent fins.
• Check hose condition and clamp tension at every service — replace hardened or cracked hoses before they fail.
• Flush and replace coolant according to the ISUZU schedule (typically every 2 years or 40,000–60,000 km). Degraded coolant accelerates corrosion in both copper and aluminum cores.
• For copper/brass radiators, repair minor leaks promptly rather than deferring — a small pinhole can rapidly expand under pressure cycling.

• Standard packing: Neutral packaging or customer-branded packaging. Packaging dimensions reference: 71 × 73.5 × 19 cm. Bulk export carton/pallet available.
• Package contents: 1 × Copper Auto Radiator Assembly. Radiator cap, mounting hardware, and hoses are not included unless explicitly stated — confirm at inquiry.
• Set options: Radiator assembly only (standard) — specify at inquiry if a cap or hose kit is required.
• Minimum order: No minimum (copper auto radiator reference); bulk quantity pricing available.
• Suitable for: ISUZU NPR / NQR radiator and cooling system repair shops, commercial truck fleet maintenance departments, radiator rebuilders, spare parts distributors, and export wholesalers.