1968 Checker Marathon Engine Parts

This table covers the Bolt kits. Read more

4 Bolt Kit parts for the 1968 Checker Marathon come from ARP.

Listed part numbers: ARP 5349701, ARP 5349801 and ARP 5349601, plus the other parts above.

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

10 Camshaft Bearing parts for the 1968 Checker Marathon come from 3 brands — DURA-BOND, SEALED POWER and MAHLE / CLEVITE. The "Popular" part is DURA-BOND CH8.

This table covers the Camshaft bolts. Read more

One part is listed for the 1968 Checker Marathon — ARP 1341001.

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

One part is listed for the 1968 Checker Marathon — MAHLE / CLEVITE 49328.

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

53 Connecting Rod Bearing parts for the 1968 Checker Marathon come from 4 brands — MAHLE / CLEVITE, KING ENGINE BEARINGS, SEALED POWER and 1 other brand. The "Popular" part is MAHLE / CLEVITE CB745HN. They are grouped as High Performance and Standard Replacement, with High Performance the largest group at 30 parts from MAHLE / CLEVITE, KING ENGINE BEARINGS and ENGINE PRO.

This table covers the Connecting Rod bolts. Read more

One part is listed for the 1968 Checker Marathon — ARP 1346001.

This table covers the Connecting Rod nuts. Read more

One part is listed for the 1968 Checker Marathon — DORMAN 635002.

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

7 Conversion / Lower Gasket Set parts for the 1968 Checker Marathon come from 5 brands — FEL-PRO, VICTOR REINZ, APEX and 2 other brands. The "Popular" part is APEX ACS3022.

This group includes APEX ACS3022, ENGINE PRO 3777332 and FEL-PRO CS80062 and the remaining parts 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

23 Crankshaft Main Bearing parts are listed for the 1968 Checker Marathon, from KING ENGINE BEARINGS, MAHLE / CLEVITE, SEALED POWER and 1 other brand. MAHLE / CLEVITE MS909H carries the "Popular" badge.

In the High Performance grade, KING ENGINE BEARINGS and MAHLE / CLEVITE supply 9 parts: engineered beyond original-equipment specification. A representative part number is MAHLE / CLEVITE MS909H.

The Standard Replacement section lists 7 options from SEALED POWER, MAHLE / CLEVITE and KING ENGINE BEARINGS — built to original-equipment specification. MAHLE / CLEVITE MS909A is listed in this group.

7 ungrouped parts are not assigned to a grade, with the same engine-level match.

This table covers the Crankshaft Main Bearing Cap bolts. Read more

2 Crankshaft Main Bearing Cap Bolt parts for the 1968 Checker Marathon come from ARP.

Listed part numbers: ARP 1345401 and ARP 1345601.

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

3 Crankshaft Repair Sleeve parts are listed for the 1968 Checker Marathon, from NATIONAL, TIMKEN and WJB / INMOTION PARTS.

This group includes NATIONAL 99176, TIMKEN KWK99176 and WJB / INMOTION PARTS WS99176.

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

16 Crankshaft Seal parts are listed for the 1968 Checker Marathon, from VICTOR REINZ, FEL-PRO, NATIONAL and 7 other brands. FEL-PRO BS118291 carries the "Popular" badge.

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

9 Cylinder Head Bolt parts for the 1968 Checker Marathon come from 5 brands — ARP, FEL-PRO, APEX and 2 other brands. The "Popular" part is ARP 1343601.

This group includes ARP 1343601, FEL-PRO ES72856 and APEX AHB322 and the remaining parts above.

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

13 Cylinder Head Gasket parts for the 1968 Checker Marathon come from 5 brands — FEL-PRO, MAHLE / CLEVITE, APEX and 2 other brands. The "Popular" part is FEL-PRO 7733SH1.

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

11 Cylinder Head Gasket Set parts for the 1968 Checker Marathon come from 4 brands — FEL-PRO, MAHLE / CLEVITE, VICTOR REINZ and 1 other brand. The "Popular" part is APEX AHS3022.

This table covers the Cylinder Head 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

One part is listed for the 1968 Checker Marathon — DORMAN 116201.

This table covers the Cylinder Head Spacer shims. Read more

This group shows a single part: VICTOR REINZ 711382900.

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

10 Engine Kit Gasket Set parts for the 1968 Checker Marathon come from 5 brands — FEL-PRO, MAHLE / CLEVITE, VICTOR REINZ and 2 other brands. The "Popular" part is FEL-PRO FS7733PT2.

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

MAHLE / CLEVITE supplies both parts for the 1968 Checker Marathon.

This group includes MAHLE / CLEVITE 2112486 and MAHLE / CLEVITE 2111679.

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

6 Harmonic Balancer parts for the 1968 Checker Marathon come from ENGINE PRO. The "Popular" part is ENGINE PRO PB2221ST.

Listed part numbers: ENGINE PRO PB2221ST, ENGINE PRO PB1012ST and ENGINE PRO PB1046ST, plus the other parts above.

This table covers the Harmonic Balancer bolts. Read more

ARP supplies the 3 Harmonic Balancer Bolt parts for the 1968 Checker Marathon.

Listed part numbers: ARP 4306801, ARP 1342501 and ARP 2342501.

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

5 Harmonic Balancer Repair Sleeve parts are listed for the 1968 Checker Marathon, from NATIONAL, FEL-PRO, MAHLE / CLEVITE and 1 other brand. NATIONAL 88176 carries the "Popular" badge.

Listed part numbers: NATIONAL 88176, FEL-PRO 16202 and MAHLE / CLEVITE A228, plus the other parts above.

This table covers the Intake & Exhaust Manifold gasket sets. 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 Intake & Exhaust Manifold Gasket Set parts for the 1968 Checker Marathon come from 3 brands — MAHLE / CLEVITE, FEL-PRO and VICTOR REINZ.

Listed part numbers: FEL-PRO MS9786, MAHLE / CLEVITE MS16033X and MAHLE / CLEVITE MS203, plus the other parts above.

This table covers the Intake Manifold bolts. Read more

4 Intake Manifold Bolt parts for the 1968 Checker Marathon come from ARP.

This group includes ARP 1342001, ARP 1342101 and ARP 4342001 and the remaining parts above.

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 for the 1968 Checker Marathon come from 4 brands — APEX, FEL-PRO, MAHLE / CLEVITE and 1 other brand.

This group includes APEX AMS3220, FEL-PRO MS9617 and MAHLE / CLEVITE MS15315 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

One part is listed for the 1968 Checker Marathon — MAHLE / CLEVITE 2112072.

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

2 Oil Drain Plug parts are listed for the 1968 Checker Marathon, from AGS and DORMAN.

Part numbers include AGS ODP00016 and DORMAN 090052.

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

7 Oil Drain Plug Gasket parts for the 1968 Checker Marathon come from 7 brands — MAHLE / CLEVITE, VICTOR REINZ, APEX and 4 other brands. The "Popular" part is MAHLE / CLEVITE 2051.

This group includes MAHLE / CLEVITE 2051, VICTOR REINZ 711346200 and APEX ADP1902 and the remaining parts above.

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

8 Oil Filter parts are listed for the 1968 Checker Marathon, from BOSCH, CHAMP / LUBER-FINER, PRO-TEC and 4 other brands. ACDELCO PF454 carries the "Popular" badge.

In the Economy grade, BOSCH, CHAMP / LUBER-FINER, PRO-TEC and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is BOSCH 72238WS.

The Standard Replacement section: 4 options from ACDELCO, WIX, BOSCH and 1 other brand. ACDELCO PF454 is listed in this group.

Part numbers include ACDELCO PF454, BOSCH 72238WS and CHAMP / LUBER-FINER PH454, among others listed above.

This table covers the Oil Pan bolts. Read more

ARP supplies the 5 Oil Pan Bolt parts for the 1968 Checker Marathon. ARP 2341802 carries the "Popular" badge.

This group includes ARP 2341802, ARP 4341802 and ARP 2341901 and the remaining parts above.

This table covers the Oil Pump shafts. Read more

One part is listed for the 1968 Checker Marathon — ARP 1347901.

This table covers the Oil Pump Shaft Guide retainers. Read more

3 Oil Pump Shaft Guide / Retainer parts for the 1968 Checker Marathon come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.

Listed part numbers: FEL-PRO 72665, MAHLE / CLEVITE H31354 and VICTOR REINZ 711403800.