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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
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For Your Every Summer RSVP, with Code: SUMMER15
Description
1669 1996-2006 LS Gen III/IV water pumpFlowkooler High Flow pump for the LS motor has a CNC machined billet impellers are designed with an increased vane count and a reduced plate to impeller clearance to achieve greater flow rates, higher head pressure and a more efficient flow than other OEM water pumps. The color is due to Type II Class II military grade anodize surface coating which protects against corrosive fluids. We source casting from different foundries. One pump has a machined
Flowkooler High Flow pump for the LS motor has a CNC machined billet impellers are designed with an increased vane count and a reduced plate-to-impeller clearance to achieve greater flow rates, higher head pressure and a more efficient flow than other OEM water pumps. The color is due to Type II Class II military grade anodize surface coating which protects against corrosive fluids.
We source casting from different foundries. One pump has a machined billet plug with an interference fit to keep it locked in and the other has a star shaped pattern with 5 bolts and an o-ring.
FlowKooler introduced the first hi flow pumps and continues to improve impeller design. Why is increased flow so important to cooling a hot engine? Because it has been proven time and time again that reducing the cycle time between the heat source and the heat sink creates more opportunities to shed heat and drop engine temperatures.
From 0-3,300 RPM…Nothing Beats a FlowKooler!
| General Specifications: | ||
|---|---|---|
| Type of Material of Pump Body | Aluminum | |
| Number of Blades on Impeller | 16 CNC Aluminum | |
| Direction of Rotation | CCW | |
| Shaft Diameter | 1-1/8" | |
| Inlet Outside Diameter | 15/16" | |
| Hose Connections: | 1st | 2nd |
| Gender | M | M |
| Diameter | 5/8" |
3/4" |
| Threaded | No |
No |
| Other Special Features: | ||
|
||
| Parts Contained in Box: | ||
| Mounting Gaskets,Installation Sheet, FlowKooler Decal | ||
| Make | Model | Year | Block | CID | Liters |
|---|---|---|---|---|---|
| BUICK | RAINIER | 04-06 | V8 | 323 | 5.3L |
| CADILLAC | ESCALADE | 02-06 | V8 | 325 | 5.3L |
| CADILLAC | ESCALADE | 02-06 | V8 | 364 | 6.0L |
| CADILLAC | ESCALADE ESV | 03-06 | V8 | 364 | 6.0L |
| CADILLAC | ESCALADE EXT | 02-06 | V8 | 364 | 6.0L |
| CHEVROLET | AVALANCHE 1500 | 02-04 | V8 | 323 | 5.3L |
| CHEVROLET | AVALANCHE 1500 | 05-06 | V8 | 325 | 5.3L |
| CHEVROLET | EXPRESS 1500 | 03-05 | V8 | 323 | 5.3L |
| CHEVROLET | EXPRESS 1500 | 2006 | V8 | 325 | 5.3L |
| CHEVROLET | EXPRESS 2500 | 03-06 | V8 | 294 | 4.8L |
| CHEVROLET | EXPRESS 2500 | 03-05 | V8 | 323 | 5.3L |
| CHEVROLET | EXPRESS 2500 | 03-06 | V8 | 364 | 6.0L |
| CHEVROLET | EXPRESS 3500 | 06-07 | V8 | 294 | 4.8L |
| CHEVROLET | EXPRESS 3500 | 03-07 | V8 | 364 | 6.0L |
| CHEVROLET | SILVERADO 1500 | 99-06 | V8 | 294 | 4.8L |
| CHEVROLET | SILVERADO 1500 | 99-05 | V8 | 323 | 5.3L |
| CHEVROLET | SILVERADO 1500 | 2006 | V8 | 325 | 5.3L |
| CHEVROLET | SILVERADO 1500 | 99-06 | V8 | 364 | 6.0L |
| CHEVROLET | SILVERADO 1500 HD | 01-06 | V8 | 364 | 6.0L |
| CHEVROLET | SILVERADO 2500 | 99-00 | V8 | 323 | 5.3L |
| CHEVROLET | SILVERADO 2500 | 99-06 | V8 | 364 | 6.0L |
| CHEVROLET | SILVERADO 2500 HD | 01-06 | V8 | 364 | 6.0L |
| CHEVROLET | SILVERADO 3500 | 01-06 | V8 | 364 | 6.0L |
| CHEVROLET | SSR | 03-04 | V8 | 325 | 5.3L |
| CHEVROLET | SSR | 05-06 | V8 | 364 | 6.0L |
| CHEVROLET | SUBURBAN 1500 | 00-05 | V8 | 323 | 5.3L |
| CHEVROLET | SUBURBAN 1500 | 2006 | V8 | 325 | 5.3L |
| CHEVROLET | SUBURBAN 1500 | 00-06 | V8 | 364 | 6.0L |
| CHEVROLET | SUBURBAN 2500 | 00-05 | V8 | 323 | 5.3L |
| CHEVROLET | SUBURBAN 2500 | 2006 | V8 | 325 | 5.3L |
| CHEVROLET | SUBURBAN 2500 | 00-06 | V8 | 364 | 6.0L |
| CHEVROLET | TAHOE | 00-06 | V8 | 294 | 4.8L |
| CHEVROLET | TAHOE | 00-05 | V8 | 323 | 5.3L |
| CHEVROLET | TAHOE | 2006 | V8 | 325 | 5.3L |
| CHEVROLET | TRAILBLAZER | 04-06 | V8 | 323 | 5.3L |
| CHEVROLET | TRAILBLAZER | 2003 | V8 | 325 | 5.3L |
| CHEVROLET | TRAILBLAZER | 2006 | V8 | 364 | 6.0L |
| GMC | CANYON | 03-06 | V8 | 323 | 5.3L |
| GMC | ENVOY | 03-06 | V8 | 323 | 5.3L |
| GMC | ENVOY XL | 03-06 | V8 | 323 | 5.3L |
| GMC | ENVOY XUV | 04-05 | V8 | 323 | 5.3L |
| GMC | SAVANA 1500 | 03-06 | V8 | 323 | 5.3L |
| GMC | SAVANA 2500 | 03-06 | V8 | 294 | 4.8L |
| GMC | SAVANA 2500 | 03-05 | V8 | 323 | 5.3L |
| GMC | SAVANA 2500 | 03-06 | V8 | 364 | 6.0L |
| GMC | SAVANA 3500 | 04-06 | V8 | 294 | 4.8L |
| GMC | SAVANA 3500 | 03-06 | V8 | 364 | 6.0L |
| GMC | SIERRA 1500 | 99-06 | V8 | 294 | 4.8L |
| GMC | SIERRA 1500 | 99-06 | V8 | 323 | 5.3L |
| GMC | SIERRA 1500 | 02-06 | V8 | 364 | 6.0L |
| GMC | SIERRA 1500 HD | 01-06 | V8 | 364 | 6.0L |
| GMC | SIERRA 2500 | 99-00 | V8 | 323 | 5.3L |
| GMC | SIERRA 2500 | 99-04 | V8 | 364 | 6.0L |
| GMC | SIERRA 2500 HD | 01-06 | V8 | 364 | 6.0L |
| GMC | SIERRA 3500 | 01-06 | V8 | 364 | 6.0L |
| GMC | SIERRA C3 | 2001 | V8 | 364 | 6.0L |
| GMC | SIERRA DENALI | 02-06 | V8 | 364 | 6.0L |
| GMC | YUKON | 00-06 | V8 | 294 | 4.8L |
| GMC | YUKON | 00-04 | V8 | 323 | 5.3L |
| GMC | YUKON | 04-06 | V8 | 325 | 5.3L |
| GMC | YUKON | 01-06 | V8 | 364 | 6.0L |
| GMC | YUKON DENALI | 2006 | V8 | 364 | 6.0L |
| GMC | YUKON DENALI XL | 2006 | V8 | 364 | 6.0L |
| GMC | YUKON XL 1500 | 00-06 | V8 | 323 | 5.3L |
| GMC | YUKON XL 1500 | 01-06 | V8 | 364 | 6.0L |
| GMC | YUKON XL 2500 | 2000 | V8 | 323 | 6.0L |
| GMC | YUKON XL 2500 | 00-04 | V8 | 364 | 6.0L |
| HUMMER | H2 | 03-06 | V8 | 364 | 6.0L |
| ISUZU | ASCENDER | 03-06 | V8 | 323 | 5.3L |
| SAAB | 9-7X | 05-06 | V8 | 325 | 5.3L |
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
4.3 ★★★★★
Based on 7 reviews
Sort
Product Reviews
★★★★★ 3
Decent fit, comfortable, but washed out black color
Color: Black, Size: Large, Color: Black, Size: Large
This shirt fits well and sits comfortably through the shoulders and chest. The stretch in the material helps it move easily, and the cut works fine for casual or office use. The overall feel is straightforward and easy to wear.
The black color is more like a washed or faded black rather than the rich black I was expecting. It doesn’t have that deep tone that stands out, and the material itself doesn’t give off a premium impression. It still works fine for regular wear and doesn’t cause any issues while moving around.
Even with the lighter black tone and the average material, the fit and comfort make it a decent shirt for everyday use or simple business‑casual outfits.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
★★★★★ 5
Mens Muscle Fit Short Sleeve Button Down Dress Shirt
Color: Light Blue, Size: Small
This shirt feels light and comfortable, with a soft stretch that makes it easy to move in. The muscle‑fit cut highlights the chest and shoulders without feeling tight, giving it a clean, modern look.
The fabric stays breathable on warm days, and the short‑sleeve button‑down style works well for office wear or casual outings. It pairs easily with jeans or dress pants.
Pros:
- Soft, stretchy fabric for comfort
- Athletic muscle‑fit silhouette
- Breathable for summer wear
- Versatile business‑casual style
- Works well for office, travel, or weekends
Cons:
- Fabric is thin, so an undershirt may be needed
- Fit runs snug across the chest for some
Summary:
A lightweight, stretchy summer shirt that gives a clean, fitted look for work or casual days.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
★★★★★ 5
Es ok
Shirt a little too see through but just what I wanted feels nice and cool in the sun
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
★★★★★ 5
Great
Size: Large, Color: Navy
Great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
Amazing clothing
Size: Medium, Color: Wine Red
These shirts are really good and very durable. I would suggest anyone that are looking for good quality clothing to go with this line.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
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