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Description
1686 1978-1989 Chevy GMC Inline 6 cylinder 292/4.8L 3-15/16" tall water pumpIf you have the 1978 1989 Chevy truck with a 292 4. 8L you might be finding it runs a little hotter now. You might also find heat cycling is occurring with your riser set up. We designed a impeller with an increased vane count and a reduced impeller vane clearance to take care of both problem. It achieves greater flow rates, higher head pressure and a more efficient flow and squeezes that air out of your riser casting. The impeller color is due to
If you have the 1978-1989 Chevy truck with a 292/4.8L you might be finding it runs a little hotter now. You might also find heat cycling is occurring with your riser set-up. We designed a impeller with an increased vane count and a reduced impeller vane clearance to take care of both problem. It achieves greater flow rates, higher head pressure and a more efficient flow and squeezes that air out of your riser casting. The impeller color is due to Type II Class II military grade surface coating which protects against corrosive fluids.
FlowKooler introduced the first hi flow pumps and continues to improve impeller design. Why is increased flow so important to cooling a hot 4.8L 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!
| Make | Model | Year | Block | CID | Liters |
| chevrolet | c20/c2500 pickup | 86-78 | L6 | 292 | 4.8L |
| chevrolet | c2500 suburban | 86-78 | L6 | 292 | 4.8L |
| chevrolet | c30 pickup | 86-78 | L6 | 292 | 4.8L |
| chevrolet | g20/ g2500 van | 1978 | L6 | 292 | 4.8L |
| chevrolet | g30/ g3500 van | 1978 | L6 | 292 | 4.8L |
| chevrolet | k20/k2500 pickup | 86-78 | L6 | 292 | 4.8L |
| chevrolet | k20/k2500 suburban | 86-78 | L6 | 292 | 4.8L |
| chevrolet | k30/k3500 pickup | 86-78 | L6 | 292 | 4.8L |
| chevrolet | p10 van | 80-78 | L6 | 292 | 4.8L |
| chevrolet | p20 van | 89-78 | L6 | 292 | 4.8L |
| chevrolet | p30 van | 89-78 | L6 | 292 | 4.8L |
| chevrolet | r30/r3500 pickup | 1987 | L6 | 292 | 4.8L |
| gmc | c25/c2500 pickup | 86-78 | L6 | 292 | 4.8L |
| gmc | c25/c2500 suburban | 86-78 | L6 | 292 | 4.8L |
| gmc | c35/c3500 pickup | 86-78 | L6 | 292 | 4.8L |
| gmc | g25/g2500 van | 1978 | L6 | 292 | 4.8L |
| gmc | k25/k2500 suburban | 86-78 | L6 | 292 | 4.8L |
| gmc | k35/k3500 pickup | 86-78 | L6 | 292 | 4.8L |
| gmc | p15/p1500 van | 80-78 | L6 | 292 | 4.8L |
| gmc | p25/p2500 van | 89-78 | L6 | 292 | 4.8L |
| gmc | p35/p3500 van | 89-78 | L6 | 292 | 4.8L |
| gmc | r3500 | 1987 | L6 | 292 | 4.8L |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.1 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
💯 stars - Best water bottle on the market!
Color: Off Road, Size: 30 Ounces
Lots of tumblr love for this Owala bottle... It's pretty much perfect!
I ordered this brand after getting my grandson a kids Owala cup that has proven to be basically indestructible and that's saying something because a 2.5 year old will put something through it's paces. That cup is over a year old now and still going strong.
Visually - it's lovely, the color is exactly as pictured but this thing isn't just a looker. She delivers in every way. The tumbler isn't round toward the top, it has these straight edges which makes it easier to grip. the handle is just high enough to hold it w/out being uncomfortable or knocking my knuckles on the spout or top of the bottle. the lock lever behind the spout is nothing short of genius (As any of us know that have 'thought' we closed out tumbler only to have it leak on our computer inside out backpack...) (<-- I'm not the only one, right?) The 'swig or sip' lid is probably my favorite feature. Generally I've preferred a straw-type lid but no more, this lid offers a great drinking experience.
This bottle does what it's meant for - keeps things hot or cold for ages. I mainly use it for cold beverages and it does not disappoint.
My elderly dad was recently in hospital and I loaned my bottle to him because it was so much easier for him to use than a cup w/ a straw. Needless to say, I'll never see that bottle again. He loved it. I'm now ordering myself another.
It's an investment for sure but it will deliver years of use.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Quite literally my perfect water bottle
Color: Black Cherry, Size: 40 Ounces
This water bottle is perfect for me and is absolutely everything I wanted in a water bottle. Easy to clean, not too heavy and the handle makes it easy to carry around anyway, keeps water cold for a day but not much longer than that (but that's okay). I haven't dropped it yet so I don't know how well it'll hold up when I inevitably do but it seems plenty sturdy to handle it. I'm so excited about the color too because it's my favorite color and from what I can tell the dark cherry is an Amazon exclusive so I'm glad I found this. I love that it's still slender and can fit in standard cup holders while being a bigger bottle holding 40oz, which was my biggest priority.
I've never had an Owala before so I wasn't sure what I'd think of the freesip mouth but I love it. I don't usually need to chug but having the option is nice too! If I ever need to replace this beauty I'll definitely get another Owala.
I really could not ask for a more perfect water bottle. I don't even usually write reviews but I love this thing so much I just had to. I usually wouldn't spend this much on a water bottle but given all the praise I have for it the price is perfectly reasonable to me (and I try to be smart with money and responsibly pick when to spend more on something or be more frugal.) This is definitely worth the higher price than I have spent in the past on water bottles, and I'm pretty confident it'll last me a long time anyway, and I use it every single day too.
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Reviewed in the United States on February 26, 2026
★★★★★ 5
Best Water Bottle Ever!!
Color: Strawberry Fields, Size: 40 Ounces, Color: Strawberry Fields, Size: 40 Ounces
This is the greatest water bottle ever! I ended up buying 2 more after this. First, it's 40oz in a very easy to hold cup, that fits into car cup holders. It's leak proof which is amazing because every other bottle I've tried leaks in some way. You have 2 ways of drinking. You have the straw, and also the sip option. The handle is strong and sturdy. It locks to make sure it won't open on you on accident. Overall this is the greatest bottle I've ever had, and I'd highly recommend to anyone looking for a great bottle!
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Reviewed in the United States on May 2, 2026
★★★★★ 4
Doesn’t leak, durable, keeps drinks cold
Color: Sparkling Sherbet, Size: 40 Ounces
Absolutely love this water bottle. I am a water bottle junkie and this one is my favorite. It doesn’t leak and the fact that I can guzzle or sip through a straw is a major plus. It is kind of heavy but it is a big thermos. The only reason I didn’t give five stars is because the bottom doesn’t fit in all cup holder. It keeps my drinks cold all day and is super easy to clean. It is very sturdy and well made. I figured after using for a while, the lid wouldn’t pop open as easy as it did when it was new, but it still does. I also love the lock feature incase the button accidentally gets pressed when I am carrying it around in my bag.
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Compact, incredibly absorbent, and a travel essential.
Color: Gray, Size: 48.00" x 24.00"
The Rainleaf microfiber towel has been a fantastic addition to my gear. It’s remarkably compact and lightweight, which makes it perfect for tossing into a gym bag or packing for trips without taking up unnecessary space. Despite its size, it’s surprisingly super absorbent and dries much faster than a standard cotton towel, which is a huge plus when you're on the move. It’s well-made, feels durable, and is definitely a must-have for anyone who travels, camps, or hits the gym regularly.
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Reviewed in the United States on May 22, 2026
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