2008 Hummer H3 Engine Parts

This table covers the Balance Shaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

2 Balance Shaft Bearing parts are listed for the 2008 Hummer H3, from ENGINETECH and MAHLE / CLEVITE.

Part numbers include ENGINETECH BS024 and MAHLE / CLEVITE SH2000S.

This table covers the chains that drive the balance shafts. Read more

9 Balance Shaft Chain parts for the 2008 Hummer H3 come from 6 brands — MELLING, PREFERRED COMPONENTS INC, S.A. GEAR and 3 other brands. The "Popular" part is CLOYES C728F.

In the Chain Only grade, S.A. GEAR, CLOYES, MELLING and 3 other brands supply 7 parts: grouped under the catalog's "Chain Only" designation — the notes column spells out what sets them apart. A representative part number is CLOYES C728F.

The Kit section lists 2 options from MELLING and PREFERRED COMPONENTS INC — grouped under the catalog's "Kit" designation — the notes column spells out what sets them apart. MELLING 3728S is listed in this group.

Listed part numbers: CLOYES C728F, MELLING 728F and GM GENUINE 12595030, plus the other parts above.

This table covers the guides that keep the balance-shaft chain on its path. Read more

4 Balance Shaft Chain Guide parts for the 2008 Hummer H3 come from 4 brands — INA, MELLING, PREFERRED COMPONENTS INC and 1 other brand.

Part numbers include INA ZG71028, MELLING BG6007 and PREFERRED COMPONENTS INC R76127, among others listed above.

This table covers the Balance Shaft Chain tensioners. Typical signs include belt flutter, a chirp that returns after a new belt, or an arm that no longer damps. Replace the tensioner with the belt at higher mileage. Read more

6 Balance Shaft Chain Tensioner parts are listed for the 2008 Hummer H3, from MELLING, S.A. GEAR, CLOYES and 3 other brands. MELLING BT5511 carries the "Popular" badge.

Listed part numbers: MELLING BT5511, S.A. GEAR 9511 and CLOYES 95511, plus the other parts above.

This table covers the Barometric pressure sensors. Typical signs include a check-engine light for MAP or fuel-rail pressure, or a limp mode under load. A vacuum leak or a clogged reference line will fake a bad pressure sensor. Read more

This group shows a single part: GM GENUINE 12711681.

This table covers the camshafts that open the valves. Read more

78 Camshaft parts for the 2008 Hummer H3 come from 4 brands — MELLING, GM GENUINE, ENGINETECH and 1 other brand. The "Popular" part is MELLING MTC7. They are grouped as High Performance and Standard Replacement, with High Performance the largest group at 72 parts from MELLING.

This table covers the Camshaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

17 Camshaft Bearing parts for the 2008 Hummer H3 come from 7 brands — ENGINETECH, DURA-BOND, GM GENUINE and 4 other brands. The "Popular" part is DURA-BOND CH25.

This table covers the Camshaft bolts. Read more

2 Camshaft Bolt parts are listed for the 2008 Hummer H3, from ELRING and GM GENUINE.

This group includes ELRING 857390 and GM GENUINE 12565425.

This table covers the Camshaft Bolt Lock plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

This group shows a single part: MELLING 5461LPK.

This table covers the Camshaft Dowel pins. Read more

This group shows a single part: GM GENUINE 24575061.

This table covers the Camshaft Retainer / Thrust plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts. Read more

6 Camshaft Retainer / Thrust Plate parts are listed for the 2008 Hummer H3, from APEX, ENGINETECH, FEL-PRO and 1 other brand. FEL-PRO ES73115 carries the "Popular" badge.

Listed part numbers: FEL-PRO ES73115, GM GENUINE 12589016 and APEX AES319, plus the other parts above.

This table covers the seals at each camshaft end. 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

2 Camshaft Seal parts are listed for the 2008 Hummer H3, from MAHLE / CLEVITE and VICTOR REINZ.

Listed part numbers: MAHLE / CLEVITE B32270 and VICTOR REINZ 711836900.

This table covers the connecting rods between each piston and the crankshaft. Read more

4 Connecting Rod parts for the 2008 Hummer H3 come from 2 brands — ENGINETECH and GM GENUINE.

Part numbers include ENGINETECH ECR408, ENGINETECH ECR326 and GM GENUINE 12613195, among others listed above.

This table covers the bearings in the connecting-rod big ends. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

50 Connecting Rod Bearing parts for the 2008 Hummer H3 come from 7 brands — MAHLE / CLEVITE, KING ENGINE BEARINGS, ENGINE PRO and 4 other brands. The "Popular" part is ENGINETECH BB253J. Grades run from High Performance through Standard Replacement; High Performance is the most populated section, led by MAHLE / CLEVITE, KING ENGINE BEARINGS and ENGINE PRO.

This table covers the Connecting Rod bolts. Read more

GM GENUINE supplies both parts for the 2008 Hummer H3.

This group includes GM GENUINE 12552947 and GM GENUINE 11570662.

This table covers lower / conversion gasket sets for oil-pan and related joints. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration. Read more

15 Conversion / Lower Gasket Set parts for the 2008 Hummer H3 come from 8 brands — APEX, ENGINETECH, FEL-PRO and 5 other brands. The "Popular" part is ENGINETECH C211CSA.

This table covers the crankshafts that turn piston motion into rotation. Read more

This group shows a single part: GM GENUINE 12736807.