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Description
Water Pump for Isuzu KB250D, KB280DT, Trooper & More – 8 Hole Flange (WA005)Vehicle Fitment & Part Details The WA005 water pump (OE ref. 8 94376 844 0) is a direct replacement for Isuzu KB250D, KB280DT, Trooper and Frontier models fitted with 4JA1, 4JA1 L and 4JB1T diesel engines. Also fits Foton Thunda 2. 8D and GWM Steed 2. 8D. This is the 8 hole flange variant. Supplied with gaskets and seals. The water pump circulates coolant through the engine cooling system. Always confirm the OE number against your vehicle before
Vehicle Fitment & Part Details
The WA005 water pump (OE ref. 8-94376-844-0) is a direct replacement for Isuzu KB250D, KB280DT, Trooper and Frontier models fitted with 4JA1, 4JA1-L and 4JB1T diesel engines. Also fits Foton Thunda 2.8D and GWM Steed 2.8D. This is the 8-hole flange variant. Supplied with gaskets and seals. The water pump circulates coolant through the engine cooling system. Always confirm the OE number against your vehicle before ordering.
Key Details
- SKU
- WA005
- Component
- Water Pump (8-hole flange)
- Brand
- Partquip
- Primary Fitment
- Isuzu KB250D / KB280DT
- Included
- Gaskets and seals
Key Benefits
- Direct OE-equivalent replacement for the Isuzu 4JA1 and 4JB1T diesel engine cooling circuit
- 8-hole flange design — confirm your pump housing has 8 bolt holes before ordering
- Supplied with gaskets and seals for a complete installation
Product Specifications
| Specification | Details |
|---|---|
| Flange Type | 8-hole |
OEM Reference Numbers
- Isuzu: 1K00-15-100, 21010-89TA1, 21010-89TA5, 21010-89TB0, 8-94140-341-1, 8-94140-341-2, 8-94310-025-0, 8-94310-251-0, 8-94376-472-0, 8-94376-844-0, 8-94376-851-0, 8-94379-461-2
Vehicle Fitment
| Make | Model | Engine | Years |
|---|---|---|---|
| Foton | Thunda 2.8D | 493ZQ | 2010– |
| GWM | Steed 2.8D | GW28TC2 | 2008–2011 |
| Isuzu | Frontier 280DT | 4JB1T | 1998–2004 |
| Isuzu | KB250D | 4JA1 | 1987–1997 |
| Isuzu | KB250D / Dc | 4JA1-L | 1997–2018 |
| Isuzu | KB280DT | 4JB1T | 1993–2002 |
| Isuzu | Trooper 2800 | 4JB1T | 1996– |
Fitment Notes
- Always verify the OE part number stamped on your existing water pump before ordering. Fitment data is provided as a guide and may not cover every sub-variant.
- This is the 8-hole flange variant. Some Isuzu engines use a 6-hole flange water pump — count the bolt holes on your existing pump housing to confirm.
Installation / Use / Maintenance Tips
- Drain the cooling system completely before removing the old water pump to minimise coolant loss and contamination.
- Clean all gasket mating surfaces thoroughly and use the supplied gaskets and seals — do not reuse old gaskets.
- Inspect the thermostat, radiator hoses and drive belt while the pump is accessible; replace any worn components at the same time.
- Refill with the manufacturer-recommended coolant type and concentration, and bleed all air from the system before starting the engine.
- Run the engine to operating temperature and check for leaks around the pump housing, hose connections and bleed points.
Common Questions
- Will this water pump fit my vehicle?
- Check the fitment table above and confirm the OE reference number matches the one on your current water pump. If your vehicle and engine code appear in the table and the OE number matches, this pump is a direct fit. Also verify that your pump housing has 8 bolt holes.
- What do the OEM reference numbers mean?
- OEM (Original Equipment Manufacturer) reference numbers are the part numbers assigned by the vehicle manufacturer. They let you cross-reference this aftermarket part against the original to confirm compatibility.
- What is included in the box?
- This water pump is supplied with gaskets and seals required for installation.
- Is Partquip the same as MAP Pro?
- No. Partquip is an independent aftermarket brand. MAP Pro is the house brand of Modern Auto Parts. Both are available in our store, but they are separate brands with their own product lines.
- Are there other variants of this water pump?
- This listing covers SKU WA005 (8-hole flange). Other water pump SKUs in our range may suit different engines, flange types or vehicle models — search “water pump” in our store or contact us for assistance.
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
4.9 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Great chair for everyday use
I’m really happy with this ergonomic chair. It was easy to put together and feels very sturdy once assembled. The mesh back is breathable and keeps my back cool even after sitting for hours. The seat cushion is comfortable and supportive, and the armrests are positioned well for working at a desk. I also like how smoothly the wheels roll and how easy it is to adjust the height. For the price, the quality is honestly better than I expected. I’ve been using it every day for work and it makes long sitting sessions much more comfortable. Definitely a great value and I would recommend it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026
★★★★★ 5
Excellent quality, comfortable for 8+ hour days
Color: Grey, Color: Grey
Since the reviews here were so very helpful to me, I decided to leave my own after using this chair a couple days.
To summarize: Overall, I am thrilled with this chair and would recommend! I work remote, in a small apartment and this works well for both space saving and silence when rolling over hardwood floors all day. For more details, read on!
It came packaged very nicely, so everything was well protected during shipping. There are no written instructions and to be honest, I didn't even look for them. If you've put one together before, this is pretty standard. The "leather" (not genuine, but feels like it) is thick and seems it will be sturdy for a long time. The padding is exceptional and that's the main reason I needed a new chair, as mine (a 'basic' brand one, IYKYK) only lasted one year before it felt like sitting on a hard plastic seat. The height is adjustable to go up higher than most, so for once I didn't have to raise it all the way to feel comfy. The surprisingly great thing about it is the arms that flip up, so I can push it all the way under my desk. I live in a small apartment, so every bit of space saved is a bonus! Speaking of apartments, the wheels on this are whisper quiet and I'm more than certain the neighbor below me is thrilled to not hear my clunky wheels from the other chair anymore. I was hesitant to pay too much for an office chair, but given the price and the quality, I feel it was an excellent purchase.
A few items to note, if you have never put one together before: hand tighten the screws first! Don't put them on full force, until the pieces have been mostly assembled. This will help it not come out lopsided and the holes will be a little easier to line up. Watch the video, it will make the process a little easier (unlike what I did - put the arms on correctly, thought that looked wrong, then put them on backwards and lost my mind LOL). The video will also show how to recline the chair, if you like that (I do). It has a recline that's smooth as butter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 11, 2026
★★★★★ 5
Very comfortable and safe chair
This executive desk chair is very convenient , for its 90° flip-up armrests can be easily pushed under the desk, perfect for home office. The rubber wheels roll smoothly and quietly on my carpet. It supports up to 275 pounds so it is safe to me . The height-adjustable back with 360° swivel makes me move freely . The curved, padded backrest provides relieve back pressure , also it is very easy to set up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 22, 2026
★★★★★ 4
Recommend it for all.
Color: Grey, Color: Grey
Very nice chair. One warning…it went together very easily except for the last screw!!! I finally gave up. A neighbor came over and gave up. My daughter came. Over and after much groaning and moaning got that last screw in.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
★★★★★ 5
Great for home office
Color: Grey, Color: Grey
This was a great replacement to the chair I use when I work from home, padding is firm and comfortable so I have no issue sitting on it for hours, the arm rest are foldable so is very convenient when my dogs are in co worker duty.
Very easy to put together and it feels very firm and stable.
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Reviewed in the United States on April 15, 2026
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