2018 Chevrolet Express 2500 Cooling System Parts

This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator. Read more

18 Coolant / Antifreeze parts for the 2018 Chevrolet Express 2500 come from 6 brands — PRESTONE, VALVOLINE, PEAK and 3 other brands. The "Popular" part is FVP MV5050GAL.

In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.

The Economy section lists 4 options from FVP, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.

In the Heavy Duty grade, PRESTONE and VALVOLINE supply 2 parts: rated for severe service. A representative part number is PRESTONE AFC12100.

In the Premium grade, PRESTONE and PEAK supply 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, VALVOLINE, PRESTONE, ACDELCO and 2 other brands supply 7 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.

This table covers the Coolant Air Bleed Hose pipes. Read more

4 Coolant Air Bleed Hose / Pipe parts for the 2018 Chevrolet Express 2500 come from 3 brands — GM GENUINE, DORMAN and GATES.

This group includes DORMAN 626591, GATES HHA147 and GM GENUINE 12600254 and the remaining parts above.

This table covers the bleeders used to purge air from the coolant circuit. Read more

One part is listed for the 2018 Chevrolet Express 2500 — GM GENUINE 12602048.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

2 Coolant Hose / Pipe parts for the 2018 Chevrolet Express 2500 come from GM GENUINE.

Part numbers include GM GENUINE 25866165 and GM GENUINE 84443244.

This table covers the seals at the Coolant Hose / Pipe. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

One part is listed for the 2018 Chevrolet Express 2500 — ELRING 868630.

This table covers the Coolant Hose Connector flanges. Read more

This group shows a single part: GM GENUINE 1510595.

This table covers the Coolant Hose retainers and clips. Read more

3 Coolant Hose Retainer / Clip parts for the 2018 Chevrolet Express 2500 come from GM GENUINE.

Part numbers include GM GENUINE 11547355, GM GENUINE 11547445 and GM GENUINE 89023418.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

3 Coolant Reservoir parts are listed for the 2018 Chevrolet Express 2500, from DORMAN, GM GENUINE and GPD.

Part numbers include DORMAN 603078, GM GENUINE 85604316 and GPD 2411182.

This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

4 Coolant Reservoir Cap parts are listed for the 2018 Chevrolet Express 2500, from CALORSTAT, DORMAN, GM GENUINE and 1 other brand.

This group includes CALORSTAT RC0147, DORMAN 82594 and GM GENUINE RC122 and the remaining parts above.

This table covers the Coolant Water Crossover Mounting sets. Read more

This group shows a single part: FEL-PRO ES73027.

This table covers the adapters used to pressure-test this cooling system. Read more

3 Cooling System Tester Adapter parts for the 2018 Chevrolet Express 2500 come from 2 brands — MOTORAD and GATES.

This group includes GATES 31391, MOTORAD 3128 and MOTORAD 3127.

This table covers the Hose clamps. Read more

3 Hose Clamp parts for the 2018 Chevrolet Express 2500 come from GM GENUINE.

This group includes GM GENUINE 11548759, GM GENUINE 11517127 and GM GENUINE 90530642.

This table covers the seals at the Intercooler. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

One part is listed for the 2018 Chevrolet Express 2500 — GM GENUINE 19130019.

This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap. Read more

17 Radiator parts for the 2018 Chevrolet Express 2500 come from 9 brands — OSC, GPD, SPECTRA PREMIUM and 6 other brands. The "Popular" part is CSF 4023.

The Economy section: 3 options from GPD and OSC. GPD 2791C is listed in this group.

Standard Replacement: 14 parts, from OSC, SPECTRA PREMIUM, AGILITY and 5 other brands. A representative part number is CSF 4023.

This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

3 Radiator Cap parts for the 2018 Chevrolet Express 2500 come from 3 brands — ACDELCO, GATES and MOTORAD.

Listed part numbers: ACDELCO RC85, GATES 31532 and MOTORAD T46.

This table covers the Radiator Fan blades. Typical signs include chatter, streaks, or a skip at the top of the stroke. Confirm left and right lengths in the notes — they are often different. Read more

6 Radiator Fan Blade parts are listed for the 2018 Chevrolet Express 2500, from GM GENUINE, ACDELCO, DORMAN and 2 other brands.

Listed part numbers: ACDELCO 1581941, DORMAN 621515 and GM GENUINE 86532392, plus the other parts above.

This table covers the Radiator Fan clutches. Typical signs include slip at highway speed, chatter on takeoff, or a pedal that stays low. Resurface or replace the flywheel with the clutch — a heat-checked flywheel wastes the new disc. Read more

15 Radiator Fan Clutch parts for the 2018 Chevrolet Express 2500 come from 7 brands — US MOTOR WORKS, GM GENUINE, FOUR SEASONS and 4 other brands. The "Popular" part is FOUR SEASONS 36973.

This table covers the shrouds that duct air through the fan and radiator. Read more

5 Radiator Fan Shroud parts for the 2018 Chevrolet Express 2500 come from 3 brands — DORMAN, GPD and GM GENUINE.

Listed part numbers: DORMAN 620995, DORMAN 620994 and GM GENUINE 84362765, plus the other parts above.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

12 Radiator Hose parts are listed for the 2018 Chevrolet Express 2500, from ACDELCO, DAYCO, GATES and 2 other brands. DAYCO 72374 carries the "Popular" badge.

This table covers the Radiator Mount bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

One part is listed for the 2018 Chevrolet Express 2500 — DORMAN 926276.

This table covers the seals at the Radiator. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

One part is listed for the 2018 Chevrolet Express 2500 — GM GENUINE 19256219.

This table covers the Radiator Upper Air Baffle retainers and clips. Read more

One part is listed for the 2018 Chevrolet Express 2500 — DORMAN 963208.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

23 Temperature Sender / Sensor parts for the 2018 Chevrolet Express 2500 come from 15 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, GPD and 12 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS TX89T.

The Economy section: 7 options from GPD, HOLSTEIN, STANDARD MOTOR PRODUCTS and 2 other brands. STANDARD MOTOR PRODUCTS TX89T is listed in this group.

The Full Service Kit section lists 1 option from WALKER PRODUCTS — grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. WALKER PRODUCTS 21191118 is listed in this group.

Standard Replacement: 15 parts, from GM GENUINE, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and 8 other brands. A representative part number is GM GENUINE 2134333.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

19 Thermostat parts are listed for the 2018 Chevrolet Express 2500, from MOTORAD, CALORSTAT, AUTOTECNICA and 7 other brands. ACDELCO 131160 carries the "Popular" badge.

Economy: 3 parts, from AUTOTECNICA, DORMAN and SKP. A representative part number is AUTOTECNICA GM0718523.

The Heavy Duty section: 2 options from MOTORAD. MOTORAD 5523187 is listed in this group.

In the Performance grade, MOTORAD supplies 2 parts: engineered beyond original-equipment specification. A representative part number is MOTORAD 2523160.

The Standard Replacement section: 12 options from MOTORAD, CALORSTAT, ACDELCO and 4 other brands. ACDELCO 131160 is listed in this group.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

9 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2018 Chevrolet Express 2500 come from 5 brands — FEL-PRO, ELRING, MAHLE / CLEVITE and 2 other brands. The "Popular" part is FEL-PRO 36219.

Part numbers include FEL-PRO 36219, FEL-PRO 36106 and FEL-PRO 35720, among others listed above.

This table covers the housings and outlets the thermostat sits in. Read more

4 Thermostat Housing / Water Outlet parts are listed for the 2018 Chevrolet Express 2500, from DORMAN, FOUR SEASONS, GATES and 1 other brand.

Economy: 1 part, from DORMAN. A representative part number is DORMAN 9022081.

The Standard Replacement section: 3 options from FOUR SEASONS, GATES and MOTORAD. FOUR SEASONS 85945 is listed in this group.

Part numbers include DORMAN 9022081, FOUR SEASONS 85945 and GATES CO34829, among others listed above.

This table covers the gaskets that seal the Water Inlet. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

2 Water Inlet Gasket parts for the 2018 Chevrolet Express 2500 come from GM GENUINE.

Part numbers include GM GENUINE 12587397 and GM GENUINE 12650512.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

18 Water Pump parts are listed for the 2018 Chevrolet Express 2500, from FVP, GMB, US MOTOR WORKS and 8 other brands. US MOTOR WORKS US6009 carries the "Popular" badge.

Economy: 6 parts, from US MOTOR WORKS, FVP, SKP and 1 other brand. A representative part number is US MOTOR WORKS US6009.

The Standard Replacement section: 11 options from GMB, GATES, ACDELCO and 5 other brands. ACDELCO 252901 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

This table covers the Water Pump & Fan Clutch assemblies. Read more

US MOTOR WORKS supplies the 4 Water Pump & Fan Clutch Assembly parts for the 2018 Chevrolet Express 2500.

Listed part numbers: US MOTOR WORKS MCK1055, US MOTOR WORKS MCK1054 and US MOTOR WORKS MCK1054T, plus the other parts above.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

8 Water Pump Gasket parts for the 2018 Chevrolet Express 2500 come from 7 brands — FEL-PRO, GM GENUINE, APEX and 4 other brands. The "Popular" part is FEL-PRO ES73010.

This group includes FEL-PRO ES73010, GM GENUINE 251663 and APEX AWP3016 and the remaining parts above.

This table covers the Water Pump Seal O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

2 Water Pump Seal / O-Ring parts are listed for the 2018 Chevrolet Express 2500, from APEX and FEL-PRO.

This group includes APEX AWP3151 and FEL-PRO 35633.