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SMX Seawater Pump Impellers for Cummins Marine Diesel Engines

Keep your engine cool with SMX Seawater Pump Impellers

SMX Impellers
  • Impellers made from synthetic based neoprene impervious to greases - allows simple installation
  • Impeller profiles redesigned for increased flow and durability
  • High-quality neoprene design yields extended life while increasing the durability and anti-abrasion characteristics
  • SMX flexible impellers are designed to acheive maximum performace in the marine environment
Replacements for most:
Sherwood, Jabsco, Cummins, Caterpillar, John Deere, Detroit, Yanmar & Others

SMX flexible impellers are designed to acheive maximum performace in the marine environment. High-quality neoprene design yields extended life while increasing the durability and anti-abrasion characteristics.

Caterpiller Seawater Pump Impellers Click Here for Caterpiller Seawater Pump Impellers


How to find your impeller:

↓ SMX Impeller Model ↓
↓ Typical Engine(s) that use that Impeller ↓

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Super 27 Impeller - Fits SMX 17XX Seawater Pumps & All Cummins QSB's

Image Typical Pump Blade Count Diameter Length / Width Shaft Type Purchase
SMX Super 27 Seawater Pump Impeller SMX 1730
SMX QSB
12 84mm
3 516"
73mm
2 78"
19mm
11T Course Spline
Qty:

Super 27 Seawater Pump Impeller fits all SMX Seawater Pumps

Super 15 Impeller - Cummins 4BTA, 6BTA (JWAC Only)

Image Sherwood Part Typical Engine Typical Pump Fits CPL Blade Count Diameter Length / Width Shaft Type Purchase
SMX Super 15 Seawater Pump Impeller 15000 4BTA
6BTA
G1503
GC1
GC4
GC5
2197, 953, 2147 12 65mm
2 916"
51mm
2"
5/8 Keyed
Qty:

Super 17 Impeller - Cummins 6BTA (SWAC), 6CTA, QSL9 with Sherwood Pumps

Image Sherwood Part Typical Engine Typical Pump Fits CPL Blade Count Diameter Length / Width Shaft Type Purchase
SMX Super 17 Seawater Pump Impeller 17000 6BTA
6CTA
QSL9
Sherwood 1730 970, 1613, 1928, 1975, 2208, 2172, 8089 12 84mm
3 516"
73mm
2 78"
20mm Keyed
Qty:

Super 17 Seawater Pump Impeller fits Sherwood Seawater PumpsImpeller Puller NOT Applicable

Read Here for Tricks & Tips to Extract and Remove an Impeller

Super 29 Impeller - Cummins QSM11 generally after 2011 (10 Tooth Spline)

Image Sherwood Part Typical Engine Typical Pump Fits CPL Blade Count Diameter Length / Width Shaft Type Purchase
SMX Super 29 Seawater Pump Impeller 29000 QSM11 Sherwood 2903 Any QSM CPL 12 95mm
3 34"
102mm
4"
45 Degree
10 Tooth Spline
Qty:

Super 18 Impeller - Cummins QSM11 (14 Tooth Spline)

Image Sherwood Part Typical Engine Typical Pump Fits CPL Blade Count Diameter Length / Width Shaft Type Purchase
SMX Super 18 Seawater Pump Impeller 18000 QSM11 Sherwood 1810
Sherwood 1814
Any QSM CPL 12 95mm
3 34"
102mm
4"
30 Degree
14 Tooth Spline
Qty:

Super 71 Impeller - Cummins 4BT, 6BT

Image Sherwood Part Typical Engine Typical Pump Fits CPL Blade Count Diameter Length / Width Shaft Type Purchase
SMX Super 71 Seawater Pump Impeller 10615 4BT
6BT
Sherwood M71 741, 742, 2891, 8206, 1522, 0592 12 65mm
2 916"
41mm
1 58"
5/8 Keyed
Qty:

Super 26 Impeller - Cummins QSC

Image Sherwood Part Typical Engine Typical Pump Fits CPL Blade Count Diameter Length / Width Shaft Type Purchase
SMX Super 26 Seawater Pump Impeller 26000 QSC Sherwood 2601 All QSC CPLs 12 95mm
3 34"
80mm
3 18"
45 Degree
10 Tooth Spline
Qty:

Impeller Puller & Extractor - One Puller Free with Every Order!


Impeller Puller & Extractor  
Fits the following SMX Impellers: Super 27, Super 29, Super 18, Super 26, Super 22, Super 30

Tricks & Tips to extract an Impeller



This is something that should and needs to be done with ALL impellers when you are removing them... Once the cover plate is removed, you need to spray WD-40 (or something similar) inside the housing and into the spline or key & shaft area (liberally) and then BUMP the engine. Then spray it one more time and bump the engine again... TWO times and now that impeller is ready to be removed.

Once you do that, it will "break" the dry bond that always seems to occur between the rubber and the housing and also loosen up the spline (or key). This is essential during any impeller removal and now the impeller will slide out EASILY.

When installing a new impeller, throw out all that crap about lubing - Use any common white lithium grease (or similar grease) and life becomes easy for all… Instant prime too. Be sloppy with it, coat all inside, shaft and impeller and I personally guarantee it with not hurt your impeller if you are planning to finish the job and test the engine within a few days or so... That old wives' tale has got to go - But, if this makes you squeamish, then go ahead and use a synthetic or silicone based grease made specifically for all types of rubber elastomers.

Also, all that crap about which way the vanes have to go is also just that - TOTAL CRAP... It makes ZERO difference as the split second the engine cranks, the blades will flip as needed. But of course, after any impeller replacement, do a test and check for leaks, etc.

Happy Fishin’…………Tony