Cummins L10 Engine Water Pump - Aftermarket

Cummins L10 Fresh Water Pump Catalog

High-Performance Cooling Components for Cummins L10 Engines

Diesel Pro Power is proud to supply high-quality Cummins L10 fresh water pumps and related cooling components for a wide range of CPL configurations. Whether you’re maintaining a fleet of industrial engines or restoring a marine application, our curated selection of freshwater pumps, thermostats, belts, hoses, clamps, and accessories ensures optimal engine temperature regulation and long-term reliability. With over 40,000 satisfied customers, Diesel Pro Power is your trusted source for Cummins L10 engine parts.

Fresh Water Pumps for Cummins L10 Engines

Proper engine cooling starts with the right water pump. The Cummins L10 engine uses two primary styles of freshwater pump, each corresponding to specific CPL numbers. Identifying the correct pump based on your engine’s CPL (Control Parts List) ensures precise fitment and optimal coolant flow.

Cummins L10 Water Pump for CPLs 2829, 8409, 2165, 2917, 2916, 2918, 8495

This freshwater pump is designed for earlier CPL configurations of the L10 engine. It delivers robust coolant circulation across demanding operating cycles, supporting both industrial and commercial applications.

Compatible CPL Numbers: 2829, 8409, 2165, 2917, 2916, 2918, 8495
Applications: Construction equipment, power generation, agricultural machinery, and heavy-duty trucks using L10 variants with the listed CPLs
Features: Cast iron housing, precision impeller design for high flow rates, engineered to withstand corrosive coolant environments
Also fits: Some M11 applications sharing the same cooling design

Cummins L10 Water Pump for CPLs 8608, 8545, 2828, 8471, 8062, 2608, 2350, 2830

This variant supports a different group of CPLs, including crossover use in M11, ISM, and QSM engines. It features enhanced coolant path geometry and updated mounting patterns.

Compatible CPL Numbers: 8608, 8545, 2828, 8471, 8062, 2608, 2350, 2830
Engine Support: L10, M11, ISM, QSM
Use Case: Ideal for fleet vehicles, marine engines, and heavy-duty equipment that require precise thermal regulation
Material & Design: Engineered for durability, OEM-grade quality, and exact fitment to minimize installation time

Thermostats and Temperature Control Components

In addition to freshwater pumps, Diesel Pro Power carries the thermostats and seals required to regulate coolant flow and engine operating temperatures.

Cummins Thermostat for L10, M11, and N14 Engines

Temperature Rating: 180°F, non-vented
Engine Compatibility: L10, M11, N14
Function: Controls coolant circulation to accelerate warm-up and maintain consistent temperature under load
Design: High-flow OEM-style with corrosion-resistant construction

Cummins Thermostat Gasket

Material: High-temperature resistant material for long-term sealing integrity
Fitment: Designed to pair precisely with Cummins thermostats across the L10, M11, and N14 engine platforms
Essential during replacement: Always replace the gasket when servicing the thermostat to prevent leaks

Thermostat Seal

OEM Equivalent: Ensures full compatibility with Cummins water and thermostat housings
Prevents Coolant Leaks: Critical sealing component in temperature control systems

Drive Belts for Cummins L10 Water Pump and Alternator Systems

Our serpentine and V-ribbed belts are engineered for continuous performance and tight grip under high-tension conditions. They’re essential to ensure consistent operation of the water pump, alternator, and fan.

Common Belt Options for L10 Water Pump & Accessories

Each belt listed below features a ribbed, 8-rib configuration and is constructed from heat- and abrasion-resistant materials.

Part Length	Width	Description
53.50"	1.125"	Belt 3288689
57.50"	1.125"	Belt 3911562
59.50"	1.125"	Belt 3911557
60.00"	1.125"	Belt 3911563
66.53"	1.125"	Belt 3289113
66.92"	1.125"	Belt 3911567
69.00"	1.125"	Belt 3289235

These belts are used in various combinations to drive the water pump, alternator, and engine fan depending on the pulley layout in your L10 setup. Always check your engine’s CPL and belt routing diagram for correct sizing.

High-Durability Silicone Coolant Hoses

Diesel Pro Power offers a full range of silicone coolant hoses for Cummins L10 engines, available in multiple diameters. These hoses are ideal for replacing cracked or aging rubber coolant lines, especially in high-heat environments like marine or heavy-duty diesel operations.

Available Inside Diameters (ID):

¾”
1”
1 ¾”
1 ⅞”
2”
2 ⅛”
2 ¼”
2 ⅜”
2 ½”
2 ¾”
3”
3 ½”
4”

Each hose is sold in 1-foot lengths and can be easily cut to fit. Their multi-layer silicone construction ensures longevity, flexibility, and leak-proof operation under pressure.

Hose Clamps for Water Pump and Cooling System Hoses

Ensure secure and leak-free connections with our premium line of coolant hose clamps. Designed to handle extreme temperature changes and high-pressure conditions, these clamps are essential when replacing any freshwater system components on Cummins L10 engines.

Available Clamp Sizes:

Clamp Model	Effective Range
10H	9/16" – 1-1/16"
4920417	13/16" – 1-3/4"
5104592	1" – 1.5"
3412320	11/16" – 1-1/4"
3922846	1-5/16" – 2-1/4"
3922847	1-9/16" – 2-1/2"
3922847 (XL)	2-5/16" – 3"
5188036	2-7/8" – 3.5"

Clamps are manufactured with corrosion-resistant finishes and feature smooth inner bands to prevent hose damage.

Additional Engine Cooling System Accessories

Temperature Switch for Cummins L10

Switch Point: Closes at 205°F
Thread Size: ½” NPT
Use Case: Activates auxiliary cooling components such as warning indicators or electric fans

Radiator Cleaner

Application: Designed for Cummins-compatible radiators
Shipping: Available to USA and Canada via ground shipping only
Effect: Removes internal scale and deposits to restore cooling efficiency

Why Choose Diesel Pro Power for Cummins L10 Water Pumps?

Reliable Fitment: Our freshwater pumps are fully compatible with L10 engine CPLs and mounting configurations
Fast Shipping: All listed parts are in stock and ready to ship
Technical Support: Expert staff ready to assist with CPL identification and installation guidance
40,000+ Satisfied Customers: Trusted across industries including marine, construction, energy, and agriculture

How to Identify Your Cummins L10 Water Pump

Before ordering your replacement freshwater pump, locate your engine’s CPL number (usually found on the data plate or engine block). Use this number to match the pump that corresponds with your configuration:

CPLs 2829, 8409, 2165, 2917, 2916, 2918, 8495: Use Pump 1
CPLs 8608, 8545, 2828, 8471, 8062, 2608, 2350, 2830: Use Pump 2

Ordering based on CPL ensures correct shaft alignment, mounting bolt pattern, and coolant flow orientation.