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GMC, (2020-2023), L5P, Cooling System

Shop Cooling System by Category

Mishimoto MMRA-LC-EG-YW Pre-Mixed Liquid Chill Coolant (Yellow)

Mishimoto MMRA-LC-EG-PR Pre-Mixed Liquid Chill Coolant (Purple)

Mishimoto MMRA-LC-FULLF Liquid Chill Synthetic Coolant

Mishimoto Pre-Mixed Liquid Chill Synthetic Coolant

Coolant 10

2001-2010 & 2017-2023 Duramax L5P Failed Coolant Bottle Sensor Fooler

WCFab WCF100224 L5P Duramax Auxiliary Coolant Tank Kit (2020-2025 Duramax)

WCFab WCF100268 OEM Placement Coolant Tank Kit (2020-2025 Duramax)

WCFab WCF100472 Billet Aluminum Coolant Tank Cap, Clear Anodized (2001-2024 Duramax; 2004.5-2024 Cummins)

WCFab WCF100543 Billet Aluminum Coolant Tank Cap, Black Anodized (2001-2024 Duramax; 2004.5-2024 Cummins)

Coolant Tanks 5

Fleece Performance Engineering FPE-DMAX-CBOP Billet Coolant Block Off Plate (2001-2025 6.6L Duramax)

WCFab WCF206-19 Low Coolant Level Sensor (2001-2010; 2017-2025 Duramax)

WCFab WCF100188 Thermostat Housing (2017-2026 6.6L Duramax)

WCFab WCF100541 Upper Coolant Pipe Kit (2020-2025 Duramax)

Parts 18

XDP XD679 XTRA Cool Water Pump (With Housing) (2017-2025 Duramax)

XDP XD678 XTRA Cool Water Pump (Pump Only) (2017-2025 Duramax)

Pumps 2

Radiator 2

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GMC, (2020-2023), L5P, Cooling System

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CSF (3)

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Hot Shot's Secret (3)

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Mahle (3)

Merchant Automotive (1)

Mishimoto Performance Parts (6)

Pacific Performance Engineering (4)

Performance Diesel Worx (1)

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CSF (3) Fleece Performance Engineering (1) Hot Shot's Secret (3) Lucas Oil (1) Mahle (3) Merchant Automotive (1) Mishimoto Performance Parts (6) Pacific Performance Engineering (4) Performance Diesel Worx (1) Wehrli Custom Fabrication (8) XDP MFG (3)

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34 products

Fleece FPE - DMAX - CBOP Duramax Billet Coolant Block Off Plate (2001 - 2025 Duramax) - Southern Diesel Supply

Fleece Performance Engineering

Fleece Performance Engineering FPE-DMAX-CBOP Billet Coolant Block Off Plate (2001-2025 6.6L Duramax)

Sale price$58.99

WCFab WCF206 - 19 Low Coolant Level Sensor (2001 - 2010; 2017 - 2025 Duramax) - Southern Diesel Supply

Wehrli Custom Fabrication

WCFab WCF206-19 Low Coolant Level Sensor (2001-2010; 2017-2025 Duramax)

Sale price$49.99

WCFab WCF100188 Thermostat Housing (2017 - 2025 Duramax) - Southern Diesel Supply

Wehrli Custom Fabrication

WCFab WCF100188 Thermostat Housing (2017-2026 6.6L Duramax)

Sale price$185.99

WCFab WCF100541 Upper Coolant Pipe Kit (2020 - 2025 Duramax) - Southern Diesel Supply

Wehrli Custom Fabrication

WCFab WCF100541 Upper Coolant Pipe Kit (2020-2025 Duramax)

Sale price$168.99

Performance Diesel Worx

2001-2010 & 2017-2023 Duramax L5P Failed Coolant Bottle Sensor Fooler

Sale price$44.99

WCFab WCF100224 L5P Duramax Auxiliary Coolant Tank Kit (2020 - 2025 Duramax) - Southern Diesel Supply

Wehrli Custom Fabrication

WCFab WCF100224 L5P Duramax Auxiliary Coolant Tank Kit (2020-2025 Duramax)

Sale price$239.99

WCFab WCF100268 OEM Placement Coolant Tank Kit (2020 - 2025 Duramax) - Southern Diesel Supply

Wehrli Custom Fabrication

WCFab WCF100268 OEM Placement Coolant Tank Kit (2020-2025 Duramax)

Sale price$525.99

WCFab WCF100472 Billet Aluminum Coolant Tank Cap, Clear Anodized (2001 - 2024 Duramax; 2004.5 - 2024 Cummins) - Southern Diesel Supply

Wehrli Custom Fabrication

WCFab WCF100472 Billet Aluminum Coolant Tank Cap, Clear Anodized (2001-2024 Duramax; 2004.5-2024 Cummins)

Sale price$39.99

PPE 114002700 Fuel Coolant Pump Relocation Kit (2020 - 2026 Duramax) - Southern Diesel Supply

Pacific Performance Engineering

PPE 114002700 Fuel Coolant Pump Relocation Kit (2020-2026 Duramax)

Sale price$35.99

PPE 119000803 Flywheel Housing Cover Coolant Block - Off Plate Gasket (2001 - 2026 Duramax) - Southern Diesel Supply

Pacific Performance Engineering

PPE 119000803 Flywheel Housing Cover Coolant Block-Off Plate Gasket (2001-2026 Duramax)

Sale price$4.99

PPE 119030100 T304 Stainless Steel Coolant Tube (2001 - 2026 Duramax) - Southern Diesel Supply

Pacific Performance Engineering

PPE 119030100 T304 Stainless Steel Coolant Tube (2001-2026 Duramax)

Sale price$197.99

PPE 119000820 Black Coolant Block - Off Plate (2001 - 2026 Duramax) - Southern Diesel Supply

Pacific Performance Engineering

PPE 119000820 Black Coolant Block-Off Plate (2001-2026 Duramax)

Sale price$53.99

XDP XD344 HD Billet Coolant Block - Off Plate (2001 - 2025 Duramax) - Southern Diesel Supply

XDP MFG

XDP XD344 HD Billet Coolant Block-Off Plate (2001-2025 Duramax)

Sale price$64.99

XDP XD678 XTRA Cool Water Pump (Pump Only) (2017 - 2025 Duramax) - Southern Diesel Supply

XDP MFG

XDP XD678 XTRA Cool Water Pump (Pump Only) (2017-2025 Duramax)

Sale price$108.99

XDP XD679 XTRA Cool Water Pump (With Housing) (2017 - 2025 Duramax) - Southern Diesel Supply

XDP MFG

XDP XD679 XTRA Cool Water Pump (With Housing) (2017-2025 Duramax)

Sale price$179.99

Mishimoto MMRA - LC - EG - YW Pre - Mixed Liquid Chill Coolant (Yellow) - Southern Diesel Supply

Mishimoto Performance Parts

Mishimoto MMRA-LC-EG-YW Pre-Mixed Liquid Chill Coolant (Yellow)

Sale price$33.99

Mishimoto MMRA - LC - EG - PR Pre - Mixed Liquid Chill Coolant (Purple) - Southern Diesel Supply

Mishimoto Performance Parts

Mishimoto MMRA-LC-EG-PR Pre-Mixed Liquid Chill Coolant (Purple)

Sale price$33.99

Mishimoto Performance Parts

Mishimoto MMRA-LC-EG-YW Pre-Mixed Liquid Chill Coolant (Yellow)

Sale price$33.99

Mishimoto MMRA - LC - FULLF Liquid Chill Synthetic Coolant - Southern Diesel Supply

Mishimoto Performance Parts

Mishimoto MMRA-LC-FULLF Liquid Chill Synthetic Coolant

Sale price$91.99

Mishimoto Pre - Mixed Liquid Chill Synthetic Coolant - Southern Diesel Supply

Mishimoto Performance Parts

Mishimoto Pre-Mixed Liquid Chill Synthetic Coolant

Sale priceFrom $31.99

Mishimoto MMRA - LC Liquid Chill Radiator Coolant Additive - Southern Diesel Supply

Mishimoto Performance Parts

Mishimoto MMRA-LC Liquid Chill Radiator Coolant Additive

Sale price$23.99

Merchant Automotive

Merchant Automotive 10089 Billet Coolant Block-Off Plate (2001-2025 6.6L Duramax)

Sale price$59.99

Mahle

MAHLE C33755 Thermostat Bypass Pipe Gasket (2017-2020 6.6L Duramax)

Sale price$3.99

Mahle

MAHLE C33756 Water Pump Outlet Pipe Gasket (2017-2020 Duramax)

Sale price$3.99

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At Southern Diesel Supply, we are passionate about power, performance, and precision. Specializing in premium accessories for RAM, Chevrolet, GMC, and Ford, we provide truck owners with the best upgrades to enhance durability, style, and functionality.