1994 Hummer H1 Engine Parts

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

2 Camshaft Bearing parts are listed for the 1994 Hummer H1, from MAHLE / CLEVITE and SEALED POWER.

Part numbers include MAHLE / CLEVITE SH1366S and SEALED POWER 1496M.

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

5 Connecting Rod Bearing parts are listed for the 1994 Hummer H1, from MAHLE / CLEVITE, SEALED POWER and KING ENGINE BEARINGS. MAHLE / CLEVITE CB1286P carries the "Popular" badge.

Part numbers include MAHLE / CLEVITE CB1286P, KING ENGINE BEARINGS CR873CP and MAHLE / CLEVITE CB1286P8, among others listed above.

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

4 Conversion / Lower Gasket Set parts are listed for the 1994 Hummer H1, from FEL-PRO, MAHLE / CLEVITE, ULTRA-POWER and 1 other brand.

Part numbers include FEL-PRO CS87262 and MAHLE / CLEVITE CS3678A, among others listed above.

This table covers the main bearings that support the crankshaft in the block. 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

4 Crankshaft Main Bearing parts for the 1994 Hummer H1 come from 3 brands — KING ENGINE BEARINGS, MAHLE / CLEVITE and SEALED POWER.

Listed part numbers: KING ENGINE BEARINGS MB5257SI, KING ENGINE BEARINGS MB5257SIX and MAHLE / CLEVITE MS2091P, plus the other parts above.

This table covers the sleeves used to restore a grooved crankshaft seal surface. Read more

8 Crankshaft Repair Sleeve parts for the 1994 Hummer H1 come from 5 brands — TIMKEN, WJB / INMOTION PARTS, BCA and 2 other brands. The "Popular" part is TIMKEN KWK99233.

Part numbers include TIMKEN KWK99233, WJB / INMOTION PARTS WS99452 and BCA NS99233, among others listed above.

This table covers the front and rear seals that keep oil in at the crankshaft. 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

11 Crankshaft Seal parts for the 1994 Hummer H1 come from 7 brands — NATIONAL, TIMKEN, BCA and 4 other brands. The "Popular" part is FEL-PRO BS40604.

This table covers the cylinder heads that close the top of the block. Read more

2 Cylinder Head parts for the 1994 Hummer H1 come from 2 brands — CYLINDER HEAD EXPRESS and ENGINE PRO.

This group includes CYLINDER HEAD EXPRESS GM6501N and ENGINE PRO 911559.

This table covers the Cylinder Head Alignment Dowel pins. Read more

PIONEER supplies both parts for the 1994 Hummer H1.

Listed part numbers: PIONEER PG233 and PIONEER S1111.

This table covers the bolts that clamp the cylinder head to the block. Read more

5 Cylinder Head Bolt parts are listed for the 1994 Hummer H1, from FEL-PRO, MAHLE / CLEVITE, PIONEER and 2 other brands. FEL-PRO ES72724 carries the "Popular" badge.

Listed part numbers: FEL-PRO ES72724, MAHLE / CLEVITE GS33193 and PIONEER PG373, plus the other parts above.

This table covers the Cylinder Head Bolt washers. Read more

One part is listed for the 1994 Hummer H1 — PIONEER S1018.

This table covers the head gaskets that seal the block to the cylinder head. 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

6 Cylinder Head Gasket parts are listed for the 1994 Hummer H1, from FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ. FEL-PRO 9701PT carries the "Popular" badge.

This group includes FEL-PRO 9701PT, FEL-PRO 9521PT and MAHLE / CLEVITE 4021 and the remaining parts above.

This table covers multi-piece gasket sets for a cylinder-head job. 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

4 Cylinder Head Gasket Set parts are listed for the 1994 Hummer H1, from FEL-PRO, MAHLE / CLEVITE, ULTRA-POWER and 1 other brand.

Listed part numbers: FEL-PRO HSU8726 and MAHLE / CLEVITE HS4021A, plus the other parts above.

This table covers the Cylinder Head Spacer shims. Read more

One part is listed for the 1994 Hummer H1 — SBI 2302104.

This table covers the block heaters that warm the coolant or oil in cold weather. Read more

This group shows a single part: KAT'S HEATERS 11612.

This table covers full gasket kits covering the joints opened in an engine rebuild. 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

FEL-PRO supplies both parts for the 1994 Hummer H1.

This group includes FEL-PRO 2601772 and FEL-PRO 2601773.

This table covers the exhaust valves that let combustion gas out of the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

This group shows a single part: SBI 01780S.

This table covers the Expansion plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

PIONEER supplies the 5 Expansion Plug parts for the 1994 Hummer H1. PIONEER EPC41 carries the "Popular" badge.

This group includes PIONEER EPC41, PIONEER EPS154 and PIONEER PE180 and the remaining parts above.

This table covers the crankshaft pulleys / harmonic balancers at the front of the engine. Read more

One part is listed for the 1994 Hummer H1 — ATP 102470.

This table covers the wear sleeves used to restore a Harmonic Balancer seal surface. Read more

3 Harmonic Balancer Repair Sleeve parts for the 1994 Hummer H1 come from 3 brands — MAHLE / CLEVITE, PIONEER and VICTOR REINZ.

Listed part numbers: MAHLE / CLEVITE A230, PIONEER HB4129 and VICTOR REINZ 711646400.

This table covers the gaskets between the intake manifold and the cylinder head. 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

4 Intake Manifold Gasket parts are listed for the 1994 Hummer H1, from FEL-PRO, MAHLE / CLEVITE, ULTRA-POWER and 1 other brand.

This group includes FEL-PRO MS91585 and MAHLE / CLEVITE MS15306 and the remaining parts above.

This table covers the intake valves that let air (and fuel, on port-injected engines) into the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

2 Intake Valve parts for the 1994 Hummer H1 come from 2 brands — SBI and SEALED POWER.

Part numbers include SBI 01484 and SEALED POWER V2287.

This table covers the engine oils listed by grade and specification for this engine. Typical signs include a low-oil lamp, knocking after a long interval, or oil that has gone thin and black well before the next service. Match the viscosity and spec in the notes (and on the filler cap). The tables group grades — they are not interchangeable. Read more

7 Oil parts for the 1994 Hummer H1 come from 3 brands — LIQUI MOLY, VALVOLINE and LUCAS OIL. The "Popular" part is VALVOLINE 818289.

The Conventional section lists 2 options from LIQUI MOLY — grouped under the catalog's "Conventional" designation — the notes column spells out what sets them apart. LIQUI MOLY 22038 is listed in this group.

The Heavy Duty / Diesel section lists 2 options from LIQUI MOLY and LUCAS OIL — grouped under the catalog's "Heavy Duty / Diesel" designation — the notes column spells out what sets them apart. LIQUI MOLY 2044 is listed in this group.

The Synthetic Blend section lists 3 options from VALVOLINE — synthetic-blend oils. VALVOLINE 818289 is listed in this group.

This group includes VALVOLINE 818289, LIQUI MOLY 22038 and LIQUI MOLY 20383 and the remaining parts above.

This table covers the drain plugs in the oil pan. Read more

4 Oil Drain Plug parts for the 1994 Hummer H1 come from 3 brands — DORMAN, AGS and PIONEER.

Part numbers include AGS ODP00016, DORMAN 090052 and DORMAN 090043, among others listed above.

This table covers the crush washers and gaskets under the oil drain plug. 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

6 Oil Drain Plug Gasket parts are listed for the 1994 Hummer H1, from ULTRA-POWER, MAHLE / CLEVITE, VICTOR REINZ and 2 other brands. MAHLE / CLEVITE 2051 carries the "Popular" badge.

This group includes MAHLE / CLEVITE 2051, VICTOR REINZ 711346200 and DORMAN 097021 and the remaining parts above.

This table covers the caps on the oil filler neck. Read more

This group shows a single part: GATES 31103.

This table covers the Oil Filler Tube grommets. Read more

One part is listed for the 1994 Hummer H1 — DORMAN 42305.

This table covers the oil filters that screw onto this engine's filter mount. Typical signs include low oil pressure after a service, or a filter that will not spin off because the old gasket stayed on the block. Lube the new gasket and tighten to the spec on the box; a double-gasket install dumps the sump on the first drive. Read more

18 Oil Filter parts for the 1994 Hummer H1 come from 14 brands — BOSCH, PUROLATOR, WIX and 11 other brands. The "Popular" part is WIX 51060XP.

The Economy section lists 8 options from PUROLATOR, BOSCH, CHAMP / LUBER-FINER and 4 other brands — the catalog's value-priced group. BOSCH 72235WS is listed in this group.

The High Performance / Heavy Duty section lists 3 options from WIX, FRAM and MOBIL — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. WIX 51060XP is listed in this group.

In the Standard Replacement grade, ACDELCO, FRAM, WIX and 4 other brands supply 7 parts: built to original-equipment specification. A representative part number is ACDELCO PF1218.

This table covers the Oil Filter Adapter Gasket 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

One part is listed for the 1994 Hummer H1 — FEL-PRO ES73229.

This table covers the gaskets between the oil pan and the block. 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

3 Oil Pan Gasket parts for the 1994 Hummer H1 come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.

Part numbers include FEL-PRO OS34406, MAHLE / CLEVITE OS32134 and VICTOR REINZ 101020401.

This table covers the Oil pumps. Typical signs include noise from the pump, no pressure, or fluid that never arrives at the outlet. Prime or fill the pump as the notes require. A dry start is a common way to kill a new unit. Read more

4 Oil Pump parts for the 1994 Hummer H1 come from 2 brands — MELLING and SEALED POWER.

The High Volume / Pressure section lists 2 options from MELLING — grouped under the catalog's "High Volume / Pressure" designation — the notes column spells out what sets them apart. MELLING M255HV294S is listed in this group.

Standard Replacement: 2 parts, from MELLING and SEALED POWER. A representative part number is MELLING M255294S.

This group includes MELLING M255HV294S, MELLING M255HV and MELLING M255294S and the remaining parts above.

This table covers the Oil Pump shafts. Read more

This group shows a single part: MELLING IS55H.

This table covers the pistons that travel in each cylinder. Typical signs include knock, blow-by, or a cylinder that will not hold compression. Piston work is a short-block job. Match bore, pin and ring pack in the notes — not the photo. Read more

5 Piston parts are listed for the 1994 Hummer H1, from MAHLE / CLEVITE and SEALED POWER. SEALED POWER 2773PNA carries the "Popular" badge.

The Premium section lists 2 options from MAHLE / CLEVITE — a step above OE specification in materials, tolerances or warranty terms. MAHLE / CLEVITE 2242897 is listed in this group.

The Standard Replacement section: 3 options from MAHLE / CLEVITE and SEALED POWER. SEALED POWER 2773PNA is listed in this group.

Listed part numbers: SEALED POWER 2773PNA, MAHLE / CLEVITE 2242897 and MAHLE / CLEVITE 2242897WR, plus the other parts above.

This table covers the Piston Pin 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

2 Piston Pin Bushing parts for the 1994 Hummer H1 come from 2 brands — MAHLE / CLEVITE and SEALED POWER.

Part numbers include MAHLE / CLEVITE 2233576 and SEALED POWER 3864Y.

This table covers the rings that seal each piston to the cylinder wall. Read more

4 Piston Ring parts are listed for the 1994 Hummer H1, from MAHLE / CLEVITE, SEALED POWER and HASTINGS MANUFACTURING.

The Premium section: 3 options from MAHLE / CLEVITE and SEALED POWER. MAHLE / CLEVITE S41718 is listed in this group.

The Standard Replacement section: 1 option from HASTINGS MANUFACTURING. HASTINGS MANUFACTURING 2D4744 is listed in this group.

This group includes MAHLE / CLEVITE S41718, MAHLE / CLEVITE 41718 and SEALED POWER E626K and the remaining parts above.

This table covers the pushrods that transfer lifter motion to the rocker arms. Read more

One part is listed for the 1994 Hummer H1 — SBI 1901500.

This table covers the Re-Ring kits. Read more

2 Re-Ring Kit parts for the 1994 Hummer H1 come from SEALED POWER.

Listed part numbers: SEALED POWER 2056866 and SEALED POWER 2056934M.

This table covers the rocker arms that transfer cam motion to the valves. Read more

This group shows a single part: SBI 1801292.

This table covers the Rocker Arm Oil plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

This group shows a single part: PIONEER RM415.

This table covers the Rocker Arm retainers. Read more

This group shows a single part: MELLING MRM1948.

This table covers the Timing Cam sprockets. Read more

2 Timing Cam Sprocket parts for the 1994 Hummer H1 come from 2 brands — INA and S.A. GEAR.

Part numbers include INA ZSS524 and S.A. GEAR S524.

This table covers the timing chains that keep the cams in time with the crank. Read more

3 Timing Chain parts are listed for the 1994 Hummer H1, from INA, MELLING and S.A. GEAR.

This group includes INA ZCC181, MELLING 181 and S.A. GEAR C181.

This table covers kits that group a timing chain with the related tensioners and guides. Read more

3 Timing Chain & Component Kit parts for the 1994 Hummer H1 come from 3 brands — S.A. GEAR, INA and MELLING.

The Economy section: 1 option from S.A. GEAR. S.A. GEAR 73114 is listed in this group.

Standard Replacement: 2 parts, from INA and MELLING. A representative part number is INA ZCC3097.

This group includes S.A. GEAR 73114, INA ZCC3097 and MELLING 3181SA.

This table covers the gaskets that seal the Timing Cover. 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

6 Timing Cover Gasket parts for the 1994 Hummer H1 come from 4 brands — FEL-PRO, VICTOR REINZ, MAHLE / CLEVITE and 1 other brand. The "Popular" part is FEL-PRO TCS45554.

Part numbers include FEL-PRO TCS45554, FEL-PRO TCS45686 and MAHLE / CLEVITE JV971, among others listed above.

This table covers the wear sleeves used to restore a Timing Cover seal surface. Read more

5 Timing Cover Repair Sleeve parts for the 1994 Hummer H1 come from 3 brands — FEL-PRO, SKF and VICTOR REINZ. The "Popular" part is FEL-PRO 16205.

Part numbers include FEL-PRO 16205, FEL-PRO 16209 and SKF 480233, among others listed above.

This table covers the Timing Cover Repair Sleeve tools. This is a service tool, not a wear part — match the application in the notes. Read more

2 Timing Cover Repair Sleeve Tool parts for the 1994 Hummer H1 come from 2 brands — FEL-PRO and VICTOR REINZ.

Part numbers include FEL-PRO 16311 and VICTOR REINZ 711646900.

This table covers the seals at the Timing Cover. 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

3 Timing Cover Seal parts for the 1994 Hummer H1 come from 3 brands — MAHLE / CLEVITE, SCHAEFFLER and SKF.

Listed part numbers: MAHLE / CLEVITE 46467, SCHAEFFLER SS3195 and SKF 23300.

This table covers the crankshaft sprockets that drive the timing chain or belt. Read more

2 Timing Crank Sprocket parts for the 1994 Hummer H1 come from 2 brands — INA and S.A. GEAR.

Listed part numbers: INA ZSS807 and S.A. GEAR S807.

This table covers the Timing gears. Read more

One part is listed for the 1994 Hummer H1 — MELLING 2823.

This table covers the gaskets that seal the valve cover to the cylinder head. 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

4 Valve Cover Gasket parts for the 1994 Hummer H1 come from 4 brands — FEL-PRO, MAHLE / CLEVITE, ULTRA-POWER and 1 other brand.

This group includes FEL-PRO VS50228C and MAHLE / CLEVITE VS38327 and the remaining parts above.

This table covers the pressed-in bronze and cast-iron guides that align valve stems. Typical signs include oil smoke on startup, a guide that has gone oval, or a valve that no longer seats quietly. Guides are a machine-shop fit. Confirm stem diameter in the notes before ordering. Read more

2 Valve Guide parts for the 1994 Hummer H1 come from SBI.

Listed part numbers: SBI 1409715 and SBI 1409716.

This table covers the lifters / tappets that transfer cam motion to the valves. Read more

3 Valve Lifter parts for the 1994 Hummer H1 come from 3 brands — MELLING, SBI and SEALED POWER.

Listed part numbers: MELLING JB2104, SBI VL114 and SEALED POWER HT2104.

This table covers the Valve seats. Read more

SBI supplies both parts for the 1994 Hummer H1.

This group includes SBI SB193723 and SBI SB156236N.

This table covers the springs that close each intake and exhaust valve. Typical signs include a sagging corner, a broken coil, or a clunk from the spring pocket. Replace springs in axle pairs and inspect the seats. Read more

One part is listed for the 1994 Hummer H1 — SBI 1601233.

This table covers the Valve Spring retainers. Read more

SBI supplies both parts for the 1994 Hummer H1.

This group includes SBI 1611012 and SBI RC157.

This table covers the keepers that lock each valve-spring retainer to the stem. Read more

4 Valve Spring Retainer Keeper parts are listed for the 1994 Hummer H1, from PIONEER and SBI.

Part numbers include PIONEER PF555HD, PIONEER SS555HD and PIONEER PF555, among others listed above.

This table covers the Valve Spring shims. Read more

This group shows a single part: PIONEER A203.

This table covers the seals on each valve stem that control oil into the guides. 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

8 Valve Stem Seal parts for the 1994 Hummer H1 come from 4 brands — FEL-PRO, SBI, MAHLE / CLEVITE and 1 other brand. The "Popular" part is FEL-PRO SS5112.

This group includes FEL-PRO SS5112, SBI 1221031 and FEL-PRO SS72711 and the remaining parts above.