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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
4.6 ★★★★★
Based on 1826 reviews
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Product Reviews
★★★★★ 5
Pretty awesome chew toy
Color: Grey Bear - Large
This toy is great!! I have a doodle that shreds everything in sight, including durable toys, but this one stood up to the Teddy test! He easily ripped off the ear/feet bits, but the fabric casing hasn’t come off after a week of play, and I expect the rubber toy inside will be even harder to break.
This is a fairly heavy toy, so it makes a thunk when it drops and is probably not suitable for small dogs. It has a light squeak that is quiet and infrequent enough to not annoy me, and it’s pretty cute too!! it does get soaked in drool pretty fast (and takes forever to dry), but at this point i’m grateful it lasts long enough to get drooled on at all.
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Reviewed in the United States on September 30, 2025
★★★★★ 3
less than 24 hours :/
Color: Grey Bear - Large, Color: Grey Bear - Large
smaller than i expected but had a strong interior that i was pleasantly surprised with. my lil lady very much enjoyed it, however it lasted less than 24 hours before the poor toy was skinned alive :( she loves plushies and she’s obsessed w his skin after tearing him apart. it does have a solid rubber interior that is still good as a toy, however i was hoping its skin would stay on longer than a day :( overall decent toy, 3 stars for being destroyed so quickly. wouldn’t recommend for strong chewers
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Reviewed in the United States on August 7, 2025
★★★★★ 5
Lasts long
Color: Panda Bear - Large
Perfect for super chewer dogs.
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Reviewed in the United States on May 14, 2026
★★★★★ 4
Dachshund said “did I hear indestructible‽ Hold my ball”
Color: Grey Bear - Large
My 15lb Dachshund took this toy as a personal challenge.
He heard me tell his human brother that it’s indestructible on the inside and said “hold my ball” promptly proceeding to schmurder the textile aspect of this adorable toy.
I’d say it took him a total of 23 1/2 minutes to get to the center of this tootsie pop. I’m not even mad tho bc he had no interest in actually ingesting the outer part, and is totally into the inner toy, which is, for him, literally indestructible. It’s solid rubber, has a wild and fun bounce to it on multiple surfaces.
Zodiac rates the squeak 10/10. It’s great especially for when I’m on a call or talking to someone in real life and can’t immediately throw said toy or pay complete attention to him.
In conclusion:
Your dog will probably love it, ((suggest to just keep an eye on them during the schmurder process and make sure you grab all the pieces that come off so none are swallowed))
Depending on your tolerance for squeaker pitch and frequency of squeak, it's a 4/10 in annoyance mostly bc it’s not a long drawn out squeak ((I can not tolerate those toys, they get “lost on top on my fridge” until I get up the courage to throw them out without him seeing)), it’s quick and requires a bit of effort to produce the sound however it’s a very high pitch squeak so it’s all up to your preference. I personally try to buy toys I can tolerate my dog loving on bc when he gets a new toy, it’s his favorite thing for a long time, like, it sleeps on the bed with us for the first month.
Hope your fur child loves this as much as mine did.
Not sure I’ll do the whole two in one toy thing again only he got through it so fast.
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Reviewed in the United States on December 25, 2025
★★★★★ 5
LOVE BARK TOYS!!!
Color: Rad Herring - Medium
I got this toy for my 1yr old Husky/Heeler/(possibly)GSD (approx 42lbs) mix when she came to our home mid/late October of 2025 and the toy lasted until December 3rd 2025 when we had to assist her with opening the fabric to get the toy on the inside.
It was a great fun toy for her and the inside toys still is and she loves playing with it. The durability of both the outside and inside toys are great for super chewers! I was glad there was no stuffing because I had gotten her a plush toy once before and she destroyed that immediately. The fabric on this was durable enough to withstand her chewing yet soft enough that it didn’t hurt her teeth. The colors were vibrant and fun for both toys even though wear and tear kinda took some of the fabric color away. I would definitely buy this again once the inside toy is no longer safe for her, especially since the size was perfect for her too.
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Reviewed in the United States on January 12, 2026
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