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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
1687 1971-1977 Inline 6 cylinder 250/4.1L 4 1/4" tall water pumpIf you have the 1971 1977 Chevy truck with a 250 4. 1L you might be finding it runs a little hotter now. You might also find heat cycling is occurring with your riser set up. Either way, the 1687 can help the problem. 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
If you have the 1971-1977 Chevy truck with a 250/4.1L you might be finding it runs a little hotter now. You might also find heat cycling is occurring with your riser set-up. Either way, the 1687 can help the problem. 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 4.1L 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 | blazer | 77-75 | L6 | 250 | 4.1L |
| chevrolet | c10/c1500 pickup | 77-75 | L6 | 250 | 4.1L |
| chevrolet | c1500 suburban | 77-75 | L6 | 250 | 4.1L |
| chevrolet | c20/c2500 pickup | 77-75 | L6 | 250 | 4.1L |
| chevrolet | c2500 suburban | 74-71 | L6 | 250 | 4.1L |
| chevrolet | c30 pickup | 1975 | L6 | 250 | 4.1L |
| chevrolet | g10/ g1500 van | 77-75 | L6 | 250 | 4.1L |
| chevrolet | g20/ g2500 van | 77-75 | L6 | 250 | 4.1L |
| chevrolet | g30/ g3500 van | 1976 | L6 | 250 | 4.1L |
| chevrolet | k10/1500 pickup | 1977 | V8 | 305 | 5.0L |
| chevrolet | k10/1500 pickup | 77-75 | L6 | 250 | 4.1L |
| chevrolet | k10/k1500 suburban | 77-75 | L6 | 250 | 4.1L |
| chevrolet | k20/k2500 pickup | 76-75 | L6 | 250 | 4.1L |
| chevrolet | k5 blazer | 77-75 | L6 | 250 | 4.1L |
| chevrolet | p30 van | 1976 | L6 | 250 | 4.1L |
| gmc | c15/c1500 pickup | 77-75 | L6 | 250 | 4.1L |
| gmc | c15/c1500 suburban | 77-75 | L6 | 250 | 4.1L |
| gmc | c25/c2500 pickup | 77-75 | L6 | 250 | 4.1L |
| gmc | c35/c3500 pickup | 1975 | L6 | 250 | 4.1L |
| gmc | g15/g1500 van | 77-75 | L6 | 250 | 4.1L |
| gmc | jimmy | 77-75 | L6 | 250 | 4.1L |
| gmc | k15/k1500 pickup | 77-75 | L6 | 250 | 4.1L |
| gmc | k15/k1500 suburban | 77-75 | L6 | 250 | 4.1L |
| gmc | k25/k2500 pickup | 76-75 | L6 | 250 | 4.1L |
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