This complete front axle knuckle kit, including left and right knuckles and king pins, is designed as a direct OEM-equivalent replacement for ISUZU NRR, NQR, NPR, and NPR-HD trucks equipped with 4HE1 or 4HK1 diesel engines, covering model years 1999 to 2025. Engineered to restore precise steering geometry, reduce play, and ensure smooth operation, this kit delivers reliable performance under heavy-duty conditions. Ideal for worn, damaged, or loose knuckles and king pins in commercial vehicles.
Complete OEM-Equivalent Kit: Includes left and right front axle knuckles and king pins for full replacement.
Truck-Specific Compatibility: Fits ISUZU NRR, NQR, NPR, and NPR-HD (1999–2025) with 4HE1 or 4HK1 diesel engines.
Restores Steering Performance: Ensures precise wheel alignment, smooth turning, and eliminates excessive play.
Durable & Heavy-Duty: Built to withstand heavy loads, rough roads, and commercial fleet operation.
Reliable & Safe: Maintains proper steering geometry for safe driving and even tire wear.
Easy Installation: Direct OEM replacement using factory mounting points; no modifications required.
OEM
8972306840 / 8972615500 / 8972615501
8972615502 / 8972615503 / 8972615504
8972615360 / 8972306830 / 8972615490
8972615491 / 8972615492 / 8972615493
8972615494
5878316081 / 5878316082 / 5878321830 / 5878321831 / 5878321832 / 5878321833
5878309780 / 5878305360 / 5878322201 / 5878324000 / 5878324001 / 5878322200
5878322202 / 5878322203 / 5878322204 / 5878322110 / 5878322111 / 5878322112
5878316080 / 5878316083 / 5878316084 / 5878316085 / 5878316086 / 5878321390
5878321391 / 5878321392 / 5878321970 / 5878321971 / 5878321972 / 5878322540
5878322540
Specifications
| SKU / Part Number | 7831608S3 |
|---|---|
| Brand | CHM |
| OEM | 8972306840, 8972615500, 8972615501, 8972615502, 8972615503, 8972615504, 8972615360, 8972306830, 8972615490, 8972615491, 8972615492, 8972615493, 8972615494, 5878316081, 5878316082, 5878321830, 5878321831, 5878321832, 5878321833, 5878309780, 5878305360, 5878322201, 5878324000, 5878324001, 5878322200, 5878322202, 5878322203, 5878322204, 5878322110, 5878322111, 5878322112, 5878316080, 5878316083, 5878316084, 5878316085, 5878316086, 5878321390, 5878321391, 5878321392, 5878321970, 5878321971, 5878321972, 5878322540
|
| Weight | 30.94 lb |
| Dimensions (L × W × H) | 15 in × 14 in × 6 in |
| Category | Wheel, Hub & Axle Repair Kits & Value Sets |
Compatibility
| Make | Model | Years | Engine | Liters | Fuel |
|---|---|---|---|---|---|
| Isuzu | NPR | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| Isuzu | NPR | 1999–2002 | GM Vortec L31 V8 | 5.7 | Gas |
| Isuzu | NPR | 2003–2020 | GM Vortec V8 | 6.0 | Gas |
| Isuzu | NPR | 2005–2009 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NPR | 2011–2018 | 4JJ1-TC | 3.0 | Diesel |
| Isuzu | NPR | 2021–2026 | GM L8T V8 | 6.6 | Gas |
| Isuzu | NPR-HD | 2004 | 4HE1-TC | 4.8 | Diesel |
| Isuzu | NPR-HD | 2004–2020 | GM Vortec V8 | 6.0 | Gas |
| Isuzu | NPR-HD | 2005–2026 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NPR-HD | 2021–2022 | GM L8T V8 | 6.6 | Gas |
| Isuzu | NPR-XD | 2016–2026 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NQR | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| Isuzu | NQR | 2005–2026 | 4HK1-TC | 5.2 | Diesel |
| Isuzu | NRR | 2005–2026 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W3500 Tiltmaster | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| Chevrolet | W3500 Tiltmaster | 1999–2002 | GM Vortec L31 V8 | 5.7 | Gas |
| Chevrolet | W3500 Tiltmaster | 2003–2009 | GM Vortec V8 | 6.0 | Gas |
| Chevrolet | W3500 Tiltmaster | 2005–2009 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W4500 Tiltmaster | 2004 | 4HE1-TC | 4.8 | Diesel |
| Chevrolet | W4500 Tiltmaster | 2004–2010 | GM Vortec V8 | 6.0 | Gas |
| Chevrolet | W4500 Tiltmaster | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W5500 Tiltmaster | 1999–2004 | 4HE1-TC | 4.8 | Diesel |
| Chevrolet | W5500 Tiltmaster | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| Chevrolet | W5500HD Tiltmaster | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| GMC | W3500 Forward | 1998–2004 | 4HE1-TC | 4.8 | Diesel |
| GMC | W3500 Forward | 1999–2002 | GM Vortec L31 V8 | 5.7 | Gas |
| GMC | W3500 Forward | 2003–2009 | GM Vortec V8 | 6.0 | Gas |
| GMC | W3500 Forward | 2005–2009 | 4HK1-TC | 5.2 | Diesel |
| GMC | W4500 Forward | 2004 | 4HE1-TC | 4.8 | Diesel |
| GMC | W4500 Forward | 2004–2010 | GM Vortec V8 | 6.0 | Gas |
| GMC | W4500 Forward | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| GMC | W5500 Forward | 1999–2004 | 4HE1-TC | 4.8 | Diesel |
| GMC | W5500 Forward | 2005–2010 | 4HK1-TC | 5.2 | Diesel |
| GMC | W5500HD Forward | 2005–2010 | 4HK1-TC | 5.2 | Diesel |