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Description
Water Pump for Hyundai ix35, Sonata, H1 & Kia Sportage, Optima Theta II (WA037)Vehicle Fitment & Part Details The WA037 water pump (OE ref. 25100 2G500) is a direct replacement for Hyundai ix35, Tucson, Sonata, H1 and Kia Sportage, Optima, Sorento models fitted with the Theta II engine family (G4NA, G4KE, G4KC, G4KD, G4KG, G4KJ). Features a 6 blade impeller. The water pump circulates coolant through the engine cooling system. Always confirm the OE number against your vehicle before ordering. Key Details SKU WA037 Component Water
Vehicle Fitment & Part Details
The WA037 water pump (OE ref. 25100-2G500) is a direct replacement for Hyundai ix35, Tucson, Sonata, H1 and Kia Sportage, Optima, Sorento models fitted with the Theta II engine family (G4NA, G4KE, G4KC, G4KD, G4KG, G4KJ). Features a 6-blade impeller. The water pump circulates coolant through the engine cooling system. Always confirm the OE number against your vehicle before ordering.
Key Details
- SKU
- WA037
- Component
- Water Pump
- Brand
- Partquip
- Primary Fitment
- Hyundai ix35 / Kia Sportage III
Key Benefits
- Direct OE-equivalent replacement with 6-blade impeller for the Hyundai/Kia Theta II engine family
- Covers Hyundai ix35, Tucson, Sonata, H1 plus Kia Sportage, Optima and Sorento 2.0–2.4 petrol models from 2009 onward
- Single pump fits multiple Theta II variants (G4KD, G4KE, G4KC, G4KJ, G4NA)
Product Specifications
| Specification | Details |
|---|---|
| Number of Blades | 6 |
OEM Reference Numbers
- Hyundai / Kia: 25100-2G500, 251002G650, 251102G500
Vehicle Fitment
| Make | Model | Engine | Years |
|---|---|---|---|
| Hyundai | H1 2.4 MPi | G4KC / G4KG | 2009– |
| Hyundai | ix35 2.0 / 2.4 | G4NA / G4KE | 2010–2017 |
| Hyundai | Sonata 2.4 / 2.4 GDi | G4KC | 2010–2016 |
| Hyundai | Tucson (JM) 2.0 | G4NA | 2010–2015 |
| Kia | Optima 2.4 / 2.4 GDi | G4KJ | 2012– |
| Kia | Sorento 2.4 | G4KE | 2015– |
| Kia | Sportage III 2.0i | G4KD | 2010– |
| Kia | Sportage III 2.4i | G4KE | 2010– |
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.
- The Theta II engine family spans 2.0–2.4 L in naturally aspirated and GDi configurations. All variants listed share this water pump.
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 — do not reuse old gaskets or seals.
- 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.
- 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.
- 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 WA037 for Theta II engines. For Gamma-family engines (1.4–1.6 L), see WA035 or WA036. Search “water pump” in our store for more options.
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
4.5 ★★★★★
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Product Reviews
★★★★★ 5
For soft, sensually awesome sheets- LOOK no more!
Color: 15 - Sage Green, Size: Full
Would give 10 stars if possible! (And this is a nonpaid for review!) When I received the sheets, instantly I knew that I had the right ones, had bought a down comforter close in color as well.. these sheets? The material is strong yet, soft and warm. So so especially soft, and when I make up the bed, ahhh! plus the corners on the fitted, such a cinch to pull over the mattress, even with a topper on the bed! Feels almost spa-like <3 Very comfy, so far in the winter and in 85 degree heat! Soft and easy peasy to care for, too. Washing is a breeze, dry and fold. So far the only thing I can smell on these sheets is my wonderful detergent! Will purchase again. And possibly, again! Thank you!!
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Soft luxury on a modest price
Color: 01 - White, Size: King
These sheets are truly luxurious. They are thin, but feel wonderful against your skin. The sheets are roomy enough to latch onto the corners without having to lift the mattress and stretch. The thread count provides incredible softness against your skin.
The pillowcases are roomy enough for your pillow so that you do not have to feel like you’re stuffing sausages.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
I love the color and feel
Color: 19 - Royal Blue, Size: Queen, Color: 19 - Royal Blue, Size: Queen
Very soft and nice quality and color. Feels great in the hot weather, very breathable. Had a great night of sleep with this set and sure to have many more! Thanks!
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Reviewed in the United States on May 30, 2026
★★★★★ 3
Very thin. You get what you pay for.
Color: 01 - White, Size: Queen
You get what you pay for. I first noticed the softness which was great. The quality is very thin. They are cool which is great. I have not washed them yet. I would suggest washing them on cool and gentle by themselves. And because they are so thin I would fluff dry for an hour if you have that setting. The two things that damages clothes and sheets, etc. are if you have an agitator in your washer, those ruin clothes and the heat you choose for the fabric you’re drying I always wash my clothes on cold. I do not have an agitator anymore and on delicate and thin fabrics, I use fluff dry. It is cool, but it will dry, especially if it is thin and I’ve had to dry my fine delicates a little bit longer on fluff that way they don’t shrink because the shrinking comes in from the heat from the dryer so keep that in mind another good thing to remember if you got white sheets like I did is that when you use your detergent add a little bit of borax or laundry booster and they will help get them clean and sparkly white. I am on the fence about whether I would recommend this or not if you’re tight on money and you take good care of them I would recommend that you get them. I’m a linen freak and I buy mostly expensive sheets and I thought I would try this out so that’s where I’m at.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
BEAUTIFUL.
Size: 1-Pack, Style: Zinnia Dahlia
Great seeds, good germination.
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Reviewed in the United States on May 23, 2026