Thermo King Water Pump O-Ring Seal OEM-Grade 335109

$16.33

Official OEM Thermo King parts catalog entry for the Thermo King O-Ring Water Pump 335109, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.

Built for Performance: The Thermo King O-Ring Water Pump 335109 delivers OEM-grade sealing reliability for temperature-sensitive fleets. Designed as a precision sealing component for Thermo King water pump assemblies, this O-ring supports consistent temperature control across transport refrigeration applications and helps maintain uptime for refeer trailers and refrigerated trucks.

Thermo King refrigeration system operators in West Texas and the Permian Basin depend on durable sealing components to protect coolant circuits and prevent leaks that reduce efficiency and increase downtime.

  • OEM-Caliber Seal – Provides leak-resistant contact at water pump joints to maintain coolant integrity and reduce service interruptions.
  • Heat- and Chemical-Resistant Elastomer – Resists typical coolant and engine exposure to support long service intervals and stable temperature control.
  • Precision Fit – Matches pump housing interfaces to ensure secure seating and consistent sealing under thermal cycling.
  • Fleet-Grade Durability – Supports high-duty refrigeration cycles common to reefer trailers and transport refrigeration units for reliable operation.
  • Simple Replacement – Installs quickly during scheduled maintenance to minimize vehicle downtime and preserve ROI on refrigeration assets.
  • Certified Support – Supplied and supported by West Texas Thermo King, a certified Thermo King dealership with service presence across Amarillo, Lubbock, Odessa, and the Permian Basin.

Product Details

Part Number: 335109 — Thermo King O-Ring Water Pump. This component functions as a sealing ring for Thermo King water pump assemblies used in transport refrigeration and temperature-control systems. The O-ring is an OEM-compatible elastomer seal engineered to withstand coolant exposure and thermal cycling common to diesel-driven and electric-driven Thermo King units. For specific pump model fitment, reference Thermo King pump diagrams or contact West Texas Thermo King for verification against fleet equipment.

Efficiency & Sustainability

This O-ring supports efficient coolant retention and leak prevention, which directly contributes to fuel-efficient cooling and reduced refrigerant and coolant waste across refrigerated fleets. Proper sealing supports Smart Reefer SR-4 monitoring and maintains predictable temperature control on Diesel Direct Electric and Precedent S-610-series systems, helping fleets meet environmental and regulatory expectations such as CARB Evergreen principles when applicable.

Installation & Maintenance Tips

Install the O-ring with clean mating surfaces and OEM-recommended lubrication to ensure correct seating. Inspect seals during routine service intervals and replace at the first sign of wear or hardening. Use OEM clamps and torque specifications for associated pump hardware to maintain leak-free performance and reduce the risk of repeat service.

Real-World Applications

The Thermo King O-Ring Water Pump 335109 is used in water pump assemblies across reefer trailers, refrigerated trucks, and transport refrigeration units where reliable coolant sealing is essential for temperature control and cargo protection. This part supports ongoing fleet operations and preventive maintenance programs in high-demand environments.

Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.

View all Thermo King Parts

Backed by Thermo King’s engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting performance and uptime assurance for fleet operations.

For product verification or service assistance, call (806) 376-5837.

For current warranty eligibility or OEM replacement coverage, please contact us for warranty information or contact the service department for confirmation.

Frequently Asked Questions

Q: Is this O-ring compatible with Thermo King Smart Reefer and Precedent systems?
A: The O-ring serves as a water pump seal for Thermo King pump assemblies and supports temperature control systems used in Smart Reefer SR-4 and Precedent-series equipment; verify fitment against the specific pump model for exact compatibility.

Q: How often should the O-ring be inspected or replaced?
A: Inspect seals during scheduled maintenance intervals and replace when the elastomer shows signs of hardening, cracking, or leakage to protect coolant integrity and fleet uptime.

Q: Does installation require special tools?
A: Installation requires standard service tools and adherence to OEM torque and clamp recommendations; use recommended lubrication and clean mating surfaces for secure fitment.

Q: How does this seal affect fleet performance?
A: Proper sealing prevents coolant loss and reduces the risk of overheating or temperature excursions, supporting reliable temperature control, fuel-efficient cooling, and cargo protection.

Ask about fleet-wide parts programs through West Texas Thermo King.

Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.

Official OEM Thermo King parts catalog entry for the Thermo King O-Ring Water Pump 335109, verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.

Built for Performance: The Thermo King O-Ring Water Pump 335109 delivers OEM-grade sealing reliability for temperature-sensitive fleets. Designed as a precision sealing component for Thermo King water pump assemblies, this O-ring supports consistent temperature control across transport refrigeration applications and helps maintain uptime for refeer trailers and refrigerated trucks.

Thermo King refrigeration system operators in West Texas and the Permian Basin depend on durable sealing components to protect coolant circuits and prevent leaks that reduce efficiency and increase downtime.

  • OEM-Caliber Seal – Provides leak-resistant contact at water pump joints to maintain coolant integrity and reduce service interruptions.
  • Heat- and Chemical-Resistant Elastomer – Resists typical coolant and engine exposure to support long service intervals and stable temperature control.
  • Precision Fit – Matches pump housing interfaces to ensure secure seating and consistent sealing under thermal cycling.
  • Fleet-Grade Durability – Supports high-duty refrigeration cycles common to reefer trailers and transport refrigeration units for reliable operation.
  • Simple Replacement – Installs quickly during scheduled maintenance to minimize vehicle downtime and preserve ROI on refrigeration assets.
  • Certified Support – Supplied and supported by West Texas Thermo King, a certified Thermo King dealership with service presence across Amarillo, Lubbock, Odessa, and the Permian Basin.

Product Details

Part Number: 335109 — Thermo King O-Ring Water Pump. This component functions as a sealing ring for Thermo King water pump assemblies used in transport refrigeration and temperature-control systems. The O-ring is an OEM-compatible elastomer seal engineered to withstand coolant exposure and thermal cycling common to diesel-driven and electric-driven Thermo King units. For specific pump model fitment, reference Thermo King pump diagrams or contact West Texas Thermo King for verification against fleet equipment.

Efficiency & Sustainability

This O-ring supports efficient coolant retention and leak prevention, which directly contributes to fuel-efficient cooling and reduced refrigerant and coolant waste across refrigerated fleets. Proper sealing supports Smart Reefer SR-4 monitoring and maintains predictable temperature control on Diesel Direct Electric and Precedent S-610-series systems, helping fleets meet environmental and regulatory expectations such as CARB Evergreen principles when applicable.

Installation & Maintenance Tips

Install the O-ring with clean mating surfaces and OEM-recommended lubrication to ensure correct seating. Inspect seals during routine service intervals and replace at the first sign of wear or hardening. Use OEM clamps and torque specifications for associated pump hardware to maintain leak-free performance and reduce the risk of repeat service.

Real-World Applications

The Thermo King O-Ring Water Pump 335109 is used in water pump assemblies across reefer trailers, refrigerated trucks, and transport refrigeration units where reliable coolant sealing is essential for temperature control and cargo protection. This part supports ongoing fleet operations and preventive maintenance programs in high-demand environments.

Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.

View all Thermo King Parts

Backed by Thermo King’s engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting performance and uptime assurance for fleet operations.

For product verification or service assistance, call (806) 376-5837.

For current warranty eligibility or OEM replacement coverage, please contact us for warranty information or contact the service department for confirmation.

Frequently Asked Questions

Q: Is this O-ring compatible with Thermo King Smart Reefer and Precedent systems?
A: The O-ring serves as a water pump seal for Thermo King pump assemblies and supports temperature control systems used in Smart Reefer SR-4 and Precedent-series equipment; verify fitment against the specific pump model for exact compatibility.

Q: How often should the O-ring be inspected or replaced?
A: Inspect seals during scheduled maintenance intervals and replace when the elastomer shows signs of hardening, cracking, or leakage to protect coolant integrity and fleet uptime.

Q: Does installation require special tools?
A: Installation requires standard service tools and adherence to OEM torque and clamp recommendations; use recommended lubrication and clean mating surfaces for secure fitment.

Q: How does this seal affect fleet performance?
A: Proper sealing prevents coolant loss and reduces the risk of overheating or temperature excursions, supporting reliable temperature control, fuel-efficient cooling, and cargo protection.

Ask about fleet-wide parts programs through West Texas Thermo King.

Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.

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