2007 Hummer H2 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

17 Coolant / Antifreeze parts are listed for the 2007 Hummer H2, from PRESTONE, PEAK, VALVOLINE and 3 other brands. FVP MV5050GAL carries the "Popular" badge.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PEAK, PRESTONE and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.

The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 7 options from VALVOLINE, PRESTONE, ACDELCO and 2 other brands — built to original-equipment specification. ACDELCO 105027 is listed in this group.

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

2 Coolant Air Bleed Hose / Pipe parts are listed for the 2007 Hummer H2, from SKP and DORMAN.

Economy: 1 part, from SKP. A representative part number is SKP SK626543.

The Standard Replacement section: 1 option from DORMAN. DORMAN 626543 is listed in this group.

Part numbers include SKP SK626543 and DORMAN 626543.

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

This group shows a single part: GM GENUINE 12602048.

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

2 Coolant Hose / Pipe parts are listed for the 2007 Hummer H2, from ACDELCO and GM GENUINE.

This group includes ACDELCO 20192S and GM GENUINE 15058002.

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

This group shows a single part: ELRING 868630.

This table covers the Coolant Hose Connector flanges. Read more

One part is listed for the 2007 Hummer H2 — GM GENUINE 1510595.

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

One part is listed for the 2007 Hummer H2 — GM GENUINE 15041309.

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

6 Coolant Reservoir parts for the 2007 Hummer H2 come from 6 brands — AUTOTECNICA, DORMAN, GPD and 3 other brands. The "Popular" part is AUTOTECNICA GM0713009.

Part numbers include AUTOTECNICA GM0713009, DORMAN 603102 and GPD 2411022, among others listed above.

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

3 Coolant Reservoir Cap parts for the 2007 Hummer H2 come from 3 brands — AUTOTECNICA, CALORSTAT and MOTORAD.

Part numbers include AUTOTECNICA GM0613020, CALORSTAT RC0147 and MOTORAD T46.

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

3 Coolant Water Crossover Mounting Set parts are listed for the 2007 Hummer H2, from FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.

Part numbers include FEL-PRO ES73027, MAHLE / CLEVITE GS33845 and VICTOR REINZ 181002301.

This table covers the Cooling Fan control modules. Read more

3 Cooling Fan Control Module parts for the 2007 Hummer H2 come from US MOTOR WORKS.

Listed part numbers: US MOTOR WORKS 16749, US MOTOR WORKS 16789 and US MOTOR WORKS 16795.

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

4 Cooling System Tester Adapter parts are listed for the 2007 Hummer H2, from GATES and MOTORAD.

Part numbers include GATES 31431, GATES 31391 and MOTORAD 3128, among others listed above.

This table covers the Hose clamps. Read more

One part is listed for the 2007 Hummer H2 — GM GENUINE 11570393.

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

15 Radiator parts are listed for the 2007 Hummer H2, from OSC, LILAND GLOBAL, KOYORAD and 6 other brands. OSC 2423E carries the "Popular" badge.

Economy: 2 parts, from OSC and GPD. A representative part number is OSC 2423E.

In the Premium (All Aluminum Construction) grade, LILAND GLOBAL supplies 2 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is LILAND GLOBAL 2370AA.

The Standard Replacement section: 11 options from KOYORAD, CSF, OSC and 4 other brands. KOYORAD A2370 is listed in this group.

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

2 Radiator Cap parts are listed for the 2007 Hummer H2, from ACDELCO and GATES.

Part numbers include ACDELCO RC98 and GATES 31532.

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

4 Radiator Fan Blade parts for the 2007 Hummer H2 come from 4 brands — DORMAN, FOUR SEASONS, GM GENUINE and 1 other brand.

Part numbers include DORMAN 620602, FOUR SEASONS 36893 and GM GENUINE 1580712, among others listed 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

7 Radiator Fan Clutch parts are listed for the 2007 Hummer H2, from FOUR SEASONS, HAYDEN, FVP and 4 other brands. FOUR SEASONS 36973 carries the "Popular" badge.

Part numbers include FOUR SEASONS 36973, HAYDEN 2786 and FVP 22158, among others listed 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

6 Radiator Hose parts for the 2007 Hummer H2 come from 4 brands — ACDELCO, CONTINENTAL, DAYCO and 1 other brand. The "Popular" part is ACDELCO 22463M.

This group includes ACDELCO 22463M, CONTINENTAL 62634 and ACDELCO 26609X and the remaining parts above.

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

19 Temperature Sender / Sensor parts are listed for the 2007 Hummer H2, from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, SKP and 14 other brands. SKP SKTX89 carries the "Popular" badge.

Economy: 6 parts, from SKP, DORMAN, GPD and 3 other brands. A representative part number is SKP SKTX89.

In the Full Service Kit grade, WALKER PRODUCTS supplies 1 part: grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. A representative part number is WALKER PRODUCTS 21191118.

The Standard Replacement section: 12 options from ACDELCO, GM GENUINE, STANDARD MOTOR PRODUCTS and 9 other brands. ACDELCO 2134514 is listed in this group.

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 for the 2007 Hummer H2 come from 9 brands — MOTORAD, GATES, CALORSTAT and 6 other brands. The "Popular" part is GATES 33910.

The Economy section: 3 options from AUTOTECNICA, DORMAN and SKP. AUTOTECNICA GM0718523 is listed in this group.

Heavy Duty: 2 parts, from MOTORAD. A representative part number is MOTORAD 5523187.

The Performance section lists 2 options from MOTORAD — engineered beyond original-equipment specification. MOTORAD 2523160 is listed in this group.

Standard Replacement: 12 parts, from MOTORAD, GATES, CALORSTAT and 3 other brands. A representative part number is GATES 33910.

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

5 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2007 Hummer H2, from FEL-PRO, APEX, MAHLE / CLEVITE and 1 other brand. FEL-PRO 35720 carries the "Popular" badge.

Listed part numbers: FEL-PRO 35720, APEX AWO2229 and FEL-PRO 36219, plus the other parts above.

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

4 Thermostat Housing / Water Outlet parts for the 2007 Hummer H2 come from 4 brands — DORMAN, GPD, FOUR SEASONS and 1 other brand.

The Economy section: 2 options from DORMAN and GPD. DORMAN 9022081 is listed in this group.

Standard Replacement: 2 parts, from FOUR SEASONS and MOTORAD. A representative part number is FOUR SEASONS 85945.

Listed part numbers: DORMAN 9022081, GPD 8241567 and FOUR SEASONS 85945, plus the other parts 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

One part is listed for the 2007 Hummer H2 — GM GENUINE 12587397.

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

15 Water Pump parts for the 2007 Hummer H2 come from 11 brands — US MOTOR WORKS, FVP, MELLING and 8 other brands. The "Popular" part is US MOTOR WORKS US6009.

The Economy section: 6 options from US MOTOR WORKS, FVP, BECK/ARNLEY and 1 other brand. US MOTOR WORKS US6009 is listed in this group.

Standard Replacement: 8 parts, from MELLING, GMB, ACDELCO and 3 other brands. A representative part number is MELLING MWP501WT.

1 further part sits outside the graded sections, with the same engine-level match.

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

2 Water Pump & Fan Clutch Assembly parts for the 2007 Hummer H2 come from US MOTOR WORKS.

This group includes US MOTOR WORKS MCK1055 and US MOTOR WORKS MCK1055T.

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

9 Water Pump Gasket parts are listed for the 2007 Hummer H2, from FEL-PRO, VICTOR REINZ, GM GENUINE and 4 other brands. FEL-PRO ES73010 carries the "Popular" badge.

Listed part numbers: FEL-PRO ES73010, GM GENUINE 251663 and APEX AWP3016, plus the other 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

4 Water Pump Seal / O-Ring parts for the 2007 Hummer H2 come from 4 brands — APEX, FEL-PRO, MAHLE / CLEVITE and 1 other brand.

Part numbers include APEX AWP3151, FEL-PRO 35633 and MAHLE / CLEVITE K31629, among others listed above.