Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
{"title":"ISUZU C240 VALVE ROCKER ARM 9126113490","imgUrl":"https:\/\/img.chinax.com\/nimg\/fc\/e5\/2d0d41fb7f3d502843fd768e1e28-200x200-1\/isuzu_c240_valve_rocker_arm_9126113490.jpg","attrs":{"Model Number":"C240","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"ISUZU TFR68 69 ENGINE MOUNTING R 8970391890","imgUrl":"https:\/\/img.chinax.com\/nimg\/7b\/f1\/8998370f517b467e4c20c8df2ac9-200x200-1\/isuzu_tfr68_69_engine_mounting_r_8970391890.jpg","attrs":{"Model Number":"TFR68 69","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"ISUZU TFR68 69 RUBBER ENG FOO L 5876101930 8970860761","imgUrl":"https:\/\/img.chinax.com\/nimg\/68\/26\/7c7f4c50909a3695c90b2db58900-200x200-1\/isuzu_tfr68_69_rubber_eng_foo_l_5876101930_8970860761.jpg","attrs":{"Model Number":"TFR68 69","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"ISUZU DMAX 4JA1 T H1 GEAR TIMING 52 8979427551","imgUrl":"https:\/\/img.chinax.com\/nimg\/dc\/8f\/faca408a6e5c150d63ac2adb933f-200x200-1\/isuzu_dmax_4ja1_t_h1_gear_timing_52_8979427551.jpg","attrs":{"Model Number":"DMAX 4JA1 T H1","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"ISUZU NHR 4JA1 DMAX CRANKSHAFT 8944552401","imgUrl":"https:\/\/img.chinax.com\/nimg\/e2\/3f\/ae38ad12211136e0e8ec331c8536-200x200-1\/isuzu_nhr_4ja1_dmax_crankshaft_8944552401.jpg","attrs":{"Brand Name":"YIMI","Supply Ability":"10000pcs\/month","Delivery Time":"15-20 days after deposit","Packaging Details":"1, neutral box , 2, color box, 3, customer brand package"}}
{"title":"ISUZU NKR KY 4JB1 CRANKSHAFT 8944436620 1005011BBA1","imgUrl":"https:\/\/img.chinax.com\/nimg\/ef\/20\/c9299ee3da59c593a2e0493b8470-200x200-1\/isuzu_nkr_ky_4jb1_crankshaft_8944436620_1005011bba1.jpg","attrs":{"Brand Name":"YIMI","Supply Ability":"10000pcs\/month","Delivery Time":"15-20 days after deposit","Packaging Details":"1, neutral box , 2, color box, 3, customer brand package"}}
The Engine Piston with OEM numbers 8-97331643-0 / 8973316430 is a verified direct-fit replacement for ISUZU 4HL1 (4.8L) and 6HL1 (7.2L) diesel engines. This critical reciprocating component converts combustion pressure into crankshaft rotation and manages thermal load within the cylinder.
Part Number:8-94391598-0 8943915980
Product Name:Piston
Car Model:ISUZU NPR NQR FRR
Engine Model:ISUZU 4HL1 6HL1
Condition:100% Brand New
Size:Standard
Key Specifications & Verification
✓Dimensional Verification: Piston diameter 115 mm, compression height 58.3 mm, total length 112.0 mm, pin size 36 × 79 mm, combustion chamber Ф55 mm
✓Ring Groove Geometry: Ring grooves sized 3.0 mm (top) / 2.0 mm (second) / 3.0 mm (oil control)
✓Material & Construction: Aluminum alloy with Alfin insert for ring-land reinforcement, internal oil gallery cooling channel, and graphite-coated skirt
✓OEM Cross-Reference Verified: Replaces multiple OEM part numbers including 8-97331643-0, 8973316430, and related variants
✓Multi-Platform Application: Compatible with ISUZU NPR, NQR, NRR, NPS, FRR, Elf series and GMC/Chevrolet commercial trucks
Failure Symptoms - When to Replace
Loss of engine compression: Worn or stuck piston rings reduce cranking pressure
Increased oil consumption: Glazed bores or tired ring packs allow oil into combustion chamber
Piston scoring or scuffing: Visible skirt wear or liner wall scoring from thermal expansion or insufficient lubrication
Knocking or tapping noise: Piston slap or bearing wear requiring immediate inspection
Vehicle & Engine Compatibility
Brand
Model / Series
Engine
Years
ISUZU
NPR (Elf)
4HL1
2002-2016
ISUZU
NQR
4HL1
2002-2016
ISUZU
NPS
4HL1
2002-2016
ISUZU
Forward FRR
6HL1
2000-2004
GMC
W3500 / W4500 / W5500
4HL1
2003-2010
Chevrolet
W3500 / W4500 / W5500
4HL1
2003-2010
Important Fitment Notes: Confirm engine variant (4HL1 vs 6HL1), verify piston-to-bore clearance, and check package contents. Piston rings and pin are not included unless specified.
Features & Benefits
Alfin Insert
Reinforces top ring groove against thermal fatigue and micro-welding
Internal Oil Gallery
Improves heat dissipation from crown and ring zone, reducing scuffing risk
Graphite-Coated Skirt
Provides self-lubricating properties during cold starts and reduces friction
Precision Ring Grooves
Ensures correct ring seating and sealing to restore compression
115 mm STD Diameter
Direct-fit replacement for original bore without machining
Manufacturing conforms to ISO/TS16949 quality standards. Each unit undergoes 100% quality inspection before packaging.
Installation & Maintenance
Professional engine rebuild experience required. Always refer to ISUZU 4HL1/6HL1 workshop manual. Improper installation can cause engine damage and serious injury.
Installation Guidelines
Verify fitment: Confirm piston diameter, compression height, and ring groove dimensions
Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...
