Product Overview
Reliable custom rubber parts for industrial applications
Quick Answer
The Jabsco 18958-0001 rubber impeller is a flexible vane pump component for replacement, maintenance service and compatible fluid handling applications. Dimensions, blade profile, hub structure, shaft connection, rubber compound, Shore A hardness, tolerance and packaging must be confirmed by drawing, official specification or physical sample before production.
The Jabsco 18958-0001 rubber impeller is a flexible vane pump component used as a replacement reference for compatible pump systems. This page does not assume unconfirmed dimensions, material grade, blade quantity, hardness or insert details. Outer diameter, height, shaft connection, blade profile and rubber compound should be confirmed by drawing, official specification or physical sample.
Product Overview
The Jabsco 18958-0001 Rubber Impeller is a 12-blade flexible Neoprene impeller manufactured as a direct-fit replacement for Jabsco raw-water engine cooling pumps used across a wide range of marine diesel engines. This part number has since been superseded by the manufacturer as 18958-0001-P, but both remain fully cross-referenced and interchangeable in the aftermarket supply chain. It is widely specified as a replacement or equivalent for Caterpillar, Cummins, John Deere, Johnson, and Sherwood diesel engine cooling pump applications, making it a benchmark reference impeller for heavy-duty marine engine cooling systems.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 18958-0001 (superseded to 18958-0001-P) |
| Material | Neoprene rubber |
| Number of Blades | 12 blades/fins |
| Impeller Diameter | 82.5 mm (3-1/4″) |
| Impeller Width/Thickness | 73.4 mm (2-57/64″) |
| Shaft Hub Diameter | 21 mm (25/32″) |
| Hub Insert Type | Brass Key Drive |
| Profile Designation | GG |
| Operating Temperature Range | 7°C to 82°C (45°F to 180°F) |
| Fluid Compatibility | Fresh water, salt water, minor oil/diesel exposure |
| Approx. Weight | 1.10 lbs (~0.5 kg) |
What Is the Jabsco 18958-0001 Impeller?
The Jabsco 18958-0001 is a flexible Neoprene rubber impeller with 12 curved blades mounted on a brass key-drive hub, designed for use in bronze-bodied flexible impeller pumps that circulate raw seawater or freshwater for marine diesel engine cooling. As the pump shaft rotates, the flexible Neoprene blades deform and re-expand within the pump housing to draw in and discharge cooling water — a self-priming action characteristic of flexible impeller pump design. This impeller is the reference part for the Sherwood 17000 series pump body and is widely cross-matched across Caterpillar, Cummins, John Deere, and Johnson heavy-duty diesel engine cooling systems.
Cross-Reference & Compatibility
| Brand | Part Number |
|---|---|
| Jabsco | 18958-0001, 18958-0001-P |
| Sherwood | 17000, 17000K |
| Caterpillar (CAT) | 7E0321, 1W5664 |
| Cummins | 3802444, 3897337, 3916852, 3925236 |
| John Deere | RE49896 |
| Johnson | 09-704BT-1 |
| JMP Marine (aftermarket) | 7600-01, 7600-01K (kit) |
Engine applications: Caterpillar 3116, 3126, 3126B, 3208, C7, C9.
Compatible Sherwood pump models: P176X, P1710C, P1716C, P1719X, P1722C, P1730C, P1732C.
Why Neoprene Is Used for This Impeller
- Wide chemical resistance — Neoprene tolerates exposure to fresh water, salt water, and minor amounts of oil or diesel fuel commonly present in engine cooling circuits.
- Proven temperature range — rated for continuous service between 7°C and 82°C, matching typical raw-water engine cooling circuit conditions.
- Industry-standard flexibility — Neoprene remains the most widely used impeller material across heavy-duty marine diesel cooling pump applications.
- Reliable key-drive engagement — the molded-in brass key-drive insert provides secure, slip-free torque transfer from the pump shaft under sustained heavy-duty load.
Installation & Maintenance Notes
- Dry-running caution — like all flexible impeller pumps, this impeller must never be run dry, even briefly, as the Neoprene blades can overheat and deform without water lubrication and cooling.
- Recommended replacement interval — typically every 1–2 seasons or per engine manufacturer service interval, depending on usage intensity and water conditions.
- Service kit availability — commonly supplied as a complete kit including a matching O-ring for a full service replacement in one part number.
- Installation orientation — blade curvature must be installed in the correct rotational direction per the pump housing orientation to ensure proper self-priming function.
Applications
- Caterpillar 3116, 3126, 3126B, 3208, C7, C9 marine diesel engine cooling pumps
- Cummins marine diesel engine cooling circuits
- John Deere marine diesel engine cooling pumps
- Sherwood 17000 series raw-water pump bodies (P176X, P1710C, P1716C, P1719X, P1722C, P1730C, P1732C)
- General bronze flexible impeller pump bodies for heavy-duty engine cooling and water transfer
Custom & OEM Manufacturing Capability
- Material options — NBR, NR, EPDM, Silicone, Neoprene (ACM), HNBR, SBR
- Hardness range — 30–95 Shore A
- Temperature range — -40°C to +300°C depending on compound selection
- Dimensional tolerance — ±0.05 mm
- Hub options — precision-machined brass key drive, spline drive, double flat drive, or custom insert configuration
- Certification — ISO 9001 compliant manufacturing available
- Custom branding — OEM and ODM orders accepted with customer logo and packaging
Why Source from Julong Rubber?
- Full cross-reference matching engineered to Jabsco, Sherwood, Caterpillar, Cummins, John Deere, and Johnson dimensional equivalents
- ISO 9001 certified manufacturing and inspection
- Full elastomer range — Neoprene as standard, plus NBR, NR, EPDM, Silicone alternatives
- Precision brass key-drive hub molding for secure, high-torque transfer
- Low MOQ with tiered volume pricing
- Fast delivery for stock cross-reference parts
- OEM/ODM capability — custom logo, packaging, and specification accepted
- Heavy-duty marine diesel application experience — commercial vessels, workboats, generators
FAQ
Can this impeller be supplied as a Jabsco 18958-0001 replacement?
Yes, the product can be reviewed as a replacement reference for Jabsco 18958-0001 applications. However, the part number alone is not enough for production approval. Dimensions, blade profile, shaft connection, rubber compound and pump compatibility must be confirmed before manufacturing.
Why are exact dimensions not listed on this page?
Exact dimensions are not listed because no confirmed drawing, official specification or measured sample data has been provided. For rubber impellers, unsupported dimensions can cause installation problems, reduced flow, excessive friction or early blade damage. Confirmed data is required before production.
Can the impeller be manufactured from an old sample?
Yes. A physical sample can be used for reverse engineering when the original drawing is unavailable. The sample should be checked for wear, deformation and blade damage. Critical dimensions, pump chamber clearance and operating conditions should still be confirmed before tooling.
How should buyers select the rubber material?
Rubber material selection depends on the working liquid, temperature, rotation speed, dry-running risk, oil exposure and chemical contact. Buyers should provide the exact media and service conditions. Material selection depends on the application conditions.
Is tooling required for this rubber impeller?
Tooling is usually required for molded rubber impellers with custom blade geometry, hub structure or insert design. Tooling cost depends on the drawing and product structure. Prototype samples can be reviewed before batch production.
Are samples available before bulk production?
Samples are available upon request. Sample preparation depends on the confirmed dimensions, rubber compound, Shore A hardness, insert structure, tooling status and inspection requirements. Please provide a drawing, official specification or physical sample for review.
Request a Custom Quote
Send your Jabsco 18958-0001 rubber impeller drawing, official specification, pump model or physical sample for review. Please include dimensions, shaft connection, blade profile, rubber material, hardness, working liquid, temperature, speed, rotation direction, quantity and packaging requirements.
