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Description
Camshaft for Isuzu KB250D, KB280DT, D-Max, GWM Steed & Foton Thunda 4JA1 / 4JB1 (1987–) – CAM1003Vehicle Fitment & Part Details This Partquip CAM1003 camshaft is a direct fit replacement for the Isuzu KB250D KB280DT, Isuzu D Max (TFR TFS), Isuzu Frontier, GWM Steed 2. 8D, and Foton Thunda 2. 8D equipped with the 4JA1, 4JA1 L, 4JB1, 4JB1T, GW28TC2, and 493ZQ engines (1987 onwards), replacing OE numbers 5636043 and 8 94127797 4. Confirm compatibility by matching the listed fitment details, any OEM reference numbers supplied, and VIN engine chassis
Vehicle Fitment & Part Details
This Partquip CAM1003 camshaft is a direct-fit replacement for the Isuzu KB250D/KB280DT, Isuzu D-Max (TFR/TFS), Isuzu Frontier, GWM Steed 2.8D, and Foton Thunda 2.8D equipped with the 4JA1, 4JA1-L, 4JB1, 4JB1T, GW28TC2, and 493ZQ engines (1987 onwards), replacing OE numbers 5636043 and 8-94127797-4. Confirm compatibility by matching the listed fitment details, any OEM reference numbers supplied, and VIN/engine/chassis information where variants exist.
Key Details
- SKU
- CAM1003
- Component
- Camshaft
- Brand
- Partquip
- OEM References
-
- Isuzu: 5636043, 8-94127797-4
- Primary Fitment
- GWM Steed 2.8TCI (GW28TC2)(08-11)
Key Benefits
- Direct OE replacement (5636043 / 8-94127797-4) ensures correct valve timing across all listed Isuzu, GWM, and Foton applications.
- Covers the full Isuzu KB 4JA1/4JB1 diesel family from 1987 to 2021, plus GWM Steed and Foton Thunda.
Vehicle Fitment
| Make | Model | Variant | Engine | Years |
|---|---|---|---|---|
| Foton | Thunda | 2.8D | 493ZQ | 2010– |
| GWM | Steed | 2.8D 4X2 | GW28TC2 | 2008–2011 |
| Isuzu | D-Max (TFR/TFS) | 2.5 | 4JA1-L | 2018–2021 |
| Isuzu | Frontier | 2.8D | 4JB1 | – |
| Isuzu | KB250D | – | 4JA1 | 1987–2003 |
| Isuzu | KB250D | – | 4JA1-L | 2000–2007 |
| Isuzu | KB280DT | – | 4JB1T | 1993–2002 |
Specifications
- Gear Diameter: 42 mm (Frontier application)
- SKU: CAM1003
OE Reference Numbers
- Isuzu: 5636043, 8-94127797-4
Warning
To protect against excessive wear of the camshaft or cam followers it is essential that a high pressure cam lube is used for the initial assembly. Failure to do so voids any warranty.
To protect against excessive wear of the camshaft or cam followers it is essential that a high pressure cam lube is used for the initial assembly. Failure to do so voids any warranty.
Frequently Asked Questions
Which OE part numbers does the CAM1003 replace?
This camshaft replaces Isuzu OE numbers 5636043 and 8-94127797-4 across all listed applications.
Does the CAM1003 fit the GWM Steed?
Yes. The CAM1003 fits the GWM Steed 2.8D 4X2 with the GW28TC2 engine (2008–2011).
Installation Tips
- Follow the manufacturer’s workshop procedure for camshaft removal and installation, including correct timing gear alignment.
- Inspect cam lobes, journals, and bearing caps for wear or damage before fitting the new camshaft.
- Apply high-pressure cam lube to all cam journals and lobes before installation — this is essential to prevent premature wear.
- Torque bearing cap bolts to specification in the correct sequence as per the workshop manual.
- After installation, verify correct valve timing and check for abnormal noise during initial startup.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1906 reviews
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Product Reviews
★★★★★ 5
It did work
Size: 1-Pack (32 oz)
Sealed a small nail hole in a front tractor tire. Better than taking to shop for inside patch or making the 3x bigger for a rope patch.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
Fixed a Bead Sealing Issue
Size: 1-Gallon (128 oz)
For traction in snow, I recently installed new "agricultural" style lugged front tires on a Simplicity garden tractor from around 1980. The tractor looks like it's survived a war, evidently having had a hard life as a workhorse owned by a school district.
The front rims are rusty, and I naively thought the beads of these thick tires would seal properly anyway. They didn't.
The jug of sealant ships with a valve core removal tool. Removing and reinstalling the cores is a piece of cake if you've never done it. I pumped a generous amount of the product into each tire and then did a few fast laps in a grassy paddock. It's a Kohler 19HP twin and it's a bit of a rocket. 😎 One tire sealed, the other didn't, and there was still a faint hiss. I added more product to that side and repeated the process. It seemed to hold. The next day that side was flat again, so I added more sealant and this time it held.
Based on this experience, I'd say that instead of strictly following what the instructions recommended as an amount per tire, keep adding product in increments until the tire holds air.
It's good stuff and it works. Will the tire self-heal if I puncture it? I don't know yet. It saved me the headache of having to remount these small tires or install tubes.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Stop wasting your money on green slime or Fix-A-Flat or any of the other tire sealant
Size: 1-Gallon (128 oz)
Flat out is by far the best product on the market to fix flat tires and prevent flat tires. This will be the second gallon jug that I purchased that stuff on everything. all of my landscape equipment has it in every tire. And to paint and even better picture for you I have a scag mower that is 20 years old The tires are probably 18 years old ugly as could be and would not hold air until I put the flat out in it it has been sitting now for over a year and every tire still has air That's how good the stuff is. Don't just buy one gallon by two cuz it will get used
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Reviewed in the United States on July 11, 2025
★★★★★ 5
John Deere 5x4 (gator)
Size: 4-Pack (128 oz), Size: 4-Pack (128 oz)
Excellent product. The John Deere 5x4 (Gator) in picture sat for ten years, the tires were flat, the front tire was the worse. To move this Gator from my neighbors place he had to load it on a trailer, he aired up the rear 4 tires but the front would air up and leak before he could move it. He put a make do wheel to get it moved to my place. shortly after unloading the rear 4 tires went flat. All were badly weathered. I read about a stop leak "FLATOUT" I ordered one bottle and put it in the front wheel and I aired it up, it held air for several hours. I called FLATOUT Support and told them I put 1/2 bottle in front tire and how it helped, He said it calls for a full bottle per tire so I added the rest of the FLATOUT. I bought four more bottles of FLATOUT and put those in all 4 tires, put air in and drove the unit a block. next day two tires were low so I finished putting FLATOUT in and aired the tires and drove two to three blocks. the weather snowed so I parked the Gator for two weeks, the tires never went flat. I checked the air pressure and had lost about 2-3 pounds, refilled with air and on a warm day drove the Gator about 2 miles. No flat tires. Note the front tire had a weathered crack 4 inches long where it sat folded for so many years and I saw where this product had sealed this leak and no air loss after two weeks of sitting.
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Reviewed in the United States on April 7, 2021
★★★★★ 5
Recommended
Works extremely well for tire patch repairs. Just be sure product is totally dry before applying patch on inner tube or interior of tubeless tire.
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Reviewed in the United States on January 25, 2026