2018 Freightliner XC Engine Parts

This table covers the Crankcase 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

One part is listed for the 2018 Freightliner XC — DORMAN 9047119.

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 2018 Freightliner XC — QUALCAST 1013162.

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

VALVOLINE supplies the 5 Oil parts for the 2018 Freightliner XC.

In the Full Synthetic grade, VALVOLINE supplies 1 part: full-synthetic oils. A representative part number is VALVOLINE 909772.

In the Heavy Duty / Diesel grade, VALVOLINE supplies 1 part: grouped under the catalog's "Heavy Duty / Diesel" designation — the notes column spells out what sets them apart. A representative part number is VALVOLINE 909778.

In the Synthetic Blend grade, VALVOLINE supplies 3 parts: synthetic-blend oils. A representative part number is VALVOLINE 909766.

Listed part numbers: VALVOLINE 909772, VALVOLINE 909778 and VALVOLINE 909766, plus the other parts above.

This table covers the heat exchangers that cool engine oil. Typical signs include oil at the cooler fittings, or coolant that looks like a milkshake. Pressure-test both circuits after a cooler swap — a leak here mixes oil and coolant. Read more

One part is listed for the 2018 Freightliner XC — SKP SK918335.

This table covers the Oil Dipstick tubes. Read more

3 Oil Dipstick / Tube parts are listed for the 2018 Freightliner XC, from DORMAN and DAYTON.

Listed part numbers: DAYTON 9175518, DORMAN 9176008 and DORMAN 9176011.

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 2018 Freightliner XC, from WIX, HASTINGS / BALDWIN and MANN.

In the High Performance / Heavy Duty grade, WIX supplies 1 part: grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. A representative part number is WIX 51748XD.

The Standard Replacement section lists 3 options from HASTINGS / BALDWIN, MANN and WIX — built to original-equipment specification. HASTINGS / BALDWIN LF515 is listed in this group.

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

Listed part numbers: WIX 51748XD, HASTINGS / BALDWIN LF515 and MANN WP12121, plus the other parts above.

This table covers the oil pans that hold the engine's oil sump. Read more

6 Oil Pan parts for the 2018 Freightliner XC come from 3 brands — SPECTRA PREMIUM, DAYTON and DORMAN.

This group includes DAYTON 2645606, DORMAN 2645065 and SPECTRA PREMIUM CMP09A and the remaining parts above.

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

One part is listed for the 2018 Freightliner XC — DORMAN 2646005G.

This table covers the turbochargers that compress intake air. Read more

GPD supplies the 8 Turbocharger parts for the 2018 Freightliner XC. GPD 2511361 carries the "Popular" badge. 1 part fits every engine; the other 7 are engine-specific.

This group includes GPD 2511361, GPD 2511800 and GPD 2511893 and the remaining parts above.

This table covers the Turbocharger Boost sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

This group shows a single part: DORMAN 9047130.

This table covers the gaskets that seal the Turbocharger. 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 Turbocharger Gasket parts for the 2018 Freightliner XC come from 3 brands — DORMAN, GPD and DAYTON. The "Popular" part is DORMAN 6749042. 1 part fits every engine; the other 5 are engine-specific.

Part numbers include DORMAN 6749042, DAYTON 6745001G and DORMAN 6749018, among others listed above.

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

This group shows a single part: MELLING VS1479.