Machine models

Cat M315C, M316C, and M318C specifications

Entries in this reference
Listing-entry count
3

Short answer

Cat M315C, M316C, and M318C: full-size excavators.

Selected configuration figures
Configuration	Documented field and quantity
M315C	Net Power 124 hp Operating Weight 36,707 lb
M316C	Net Power 138 hp Operating Weight 39,353 lb
M318C	Net Power 151 hp Operating Weight 41,557 lb

M315C, M316C, and M318C specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Cat	M315C, M316C, and M318C	3	M315C, M316C, and M318C

Boom/Stick Option (Mex) 1
Specification	M315C	M316C	M318C
Shipping Length Of Unit	27.83 ft	28.06 ft	29.04 ft
Shipping Height Of Unit	13.06 ft	13 ft	13.03 ft
Max Cutting Height	32.94 ft	33.01 ft	32.81 ft
Max Loading Height	22.81 ft	22.87 ft	22.87 ft
Max Reach Along Ground	29.24 ft	29.24 ft	30.52 ft
Max Vertical Wall Dig Depth	12.21 ft	12.14 ft	12.08 ft
Max Digging Depth	18.34 ft	18.28 ft	19.89 ft
Boom/Stick Option (Mex) 1	VA Boom 5200mm / Stick 2100mm	VA Boom 5200mm / Stick 2100mm	VA Boom 5260 / Stick 2500

Dimensions and weight
Specification	M315C	M316C	M318C
Wheelbase	8.21 ft	8.54 ft	8.54 ft
Tail Swing Radius	7.21 ft	7.52 ft	8.21 ft
Overall Width	8.37 in	8.37 in	8.37 in
Ground Clearance	1.22 ft	1.24 ft	1.24 ft
Overall Width - Outriggers Down	12.03 ft	12.07 ft	12.07 ft
Height To Top Of Cab	10.34 ft	10.41 ft	10.41 ft

Specification	M316C	M318C
Upper Structure Clearance	4.2 ft	4.19 ft

Engine
Specification	M315C	M316C	M318C
Number Of Cylinders	4	6	6
Engine Model	3054E	3056E DIT ATAAC	3056E DIT ATAAC
Net Power	124 hp	138 hp	151 hp
Power Measured @	2,000 rpm	2,000 rpm	2,000 rpm
Displacement	268.6 cu in	366 cu in	366 cu in
Torque Measured @	1,400 rpm	1,400 rpm	1,400 rpm
Net Torque	368.8 lb-ft	461 lb-ft	497.9 lb-ft
Aspiration	turbocharged	Turbocharged with Aftercooler	Turbocharged with Aftercooler

Specification	M316C	M318C
Cylinders	6	6
Bore	3.9 in	3.9 in
Stroke	5 in	5 in
Flywheel Power	138 hp	151 hp
Eec 80/1269	138 hp	151 hp
ISO 9249	138 hp	151 hp
Maximum Torque - 1,400 Rpm	461 lb-ft	498 lb-ft

Operational
Specification	M315C	M316C	M318C
Fuel Capacity	62.1 gal	81.9 gal	101.8 gal
Operating Weight	36,707 lb	39,353 lb	41,557 lb
Cooling System Fluid Capacity	10.4 gal	10.4 gal	10.4 gal
Engine Oil Capacity	2.4 gal	4.3 gal	4.3 gal
Front Diff Fluid Capacity	2.8 gal	2.8 gal	2.8 gal
Rear Diff Fluid Capacity	3.7 gal	3.7 gal	3.7 gal
Hydraulic System Fluid Capacity	60.8 gal	60.8 gal	67.4 gal
Hydraulic Pump Flow Capacity	21.2 gpm	64.8 gpm	74 gpm
Oscillating Axle Angle	18 degrees	18 degrees	18 degrees
Max Steering Angle	32 degrees	32 degrees	35 degrees
Tire Size	10.00-20 16PR	10.00-20	10.00-20

Specification	M315C
Operational Voltage	12 V

Specification	M315C	M316C
Alternator Supplied Amperage	75 amps	75 amps

Specification	M316C	M318C
Hydraulic System Relief Valve Pressure	5,076 psi	5,076 psi

Swing Mechanism
Specification	M315C	M316C	M318C
Swing Speed	10.5 rpm	10.5 rpm	10.5 rpm
Swing Torque	29,576 lb-ft	29,575 lb-ft	33,700 lb-ft

Specification	M316C	M318C
Maximum Flow	21.1 gpm	29.6 gpm
Pressure	5,366 psi	4,496 psi

Transmission and speeds
Specification	M315C	M316C	M318C
Transmission Type	powershift	Hydrostatic	Hydrostatic
Number Of Forward Gears	2	2	2
Number Of Reverse Gears	2	2	2
Max Travel Speed	21.2 mph	21.2 mph	21.2 mph

Specification	M316C	M318C
Creeper Speed - 2nd Gear	8.1 mph	8.1 mph
Maximum Travel Speed	21 mph	21 mph
Forward/Reverse - 1st Gear	5.6 mph	5.6 mph
Creeper Speed - 1st Gear	2.5 mph	2.5 mph
Maximum Gradeability	69	61.5% or 31.6 degrees
2nd Gear - Forward	21 mph	21 mph
2nd Gear - Reverse	12.4 mph	12.4 mph

Buckets
Specification	M315C	M316C	M318C
Reference Bucket Capacity	0.4 yd3	1 yd3	1 yd3
Minimum Bucket Capacity	0.4 yd3	0.5 yd3	0.5 yd3
Maximum Bucket Capacity	1.2 yd3	1.3 yd3	1.5 yd3

Tires
Specification	M316C	M318C
Standard	10.00-20 dual pneumatic	10.00-20 dual pneumatic
Optional	10.00-20 dual solid rubber; 18-R 19.5 XF single; 600/40-22.5 single; 11.00-20 dual	10.00-20 dual solid rubber; 18-R 19.5 XF single; 600/40-22.5 single; 11.00-20 dual

Weights
Specification	M316C	M318C
Counterweight	8,160 lb	8,820 lb
Dozer Blade	1,675 lb	1,675 lb
Outriggers	2,250 lb	2,250 lb
Rear - Dozer Only (1)	36,930 lb	40,340 lb
Front And Rear Outriggers (1)	40,120 lb	43,320 lb
Rear - Dozer, Front Outriggers (2)	38,250 lb	41,560 lb
Rear - Dozer, Front Outriggers (1)	39,350 lb	42,660 lb
Rear - Dozer Only (2)	35,940 lb	39,240 lb
Front And Rear Outriggers (2)	39,020 lb	42,220 lb

Hydraulic System
Specification	M316C	M318C
Travel Circuit	5,076 psi	5,076 psi
Normal	5,076 psi	5,076 psi
Medium Pressure	450 psi	450 psi
Implement/Travel Circuit	65 gpm	65 gpm

Operating Specifications
Specification	M316C	M318C
Maximum Reach - Ground Level	30.3 ft	31 ft

Service Refill Capacities
Specification	M316C	M318C
Fuel Tank	81.9 gal	102 gal
Hydraulic Tank	36 gal	45 gal
Hydraulic System - Including Tank	61 gal	67 gal
Engine Crankcase	4.8 gal	4.8 gal
Powershift Transmission	0.8 gal	0.8 gal
Front Steering Axle - Differential	2.1 gal	2.1 gal
Rear Axle - Housing (Differential)	2.9 gal	2.9 gal
Cooling	10.3 gal	10.3 gal
Disk Brakes	0.5 gal	0.5 gal

Cab
Specification	M316C	M318C
Cab/Fogs Option	ISO 10262	ISO 10262

Variants — Source comparison annotation
Source guide	Differing-field count reported
M315C, M316C, and M318C	77

Ratios
Figure	M315C	M316C	M318C
Engine horsepower per 1,000 lb of weight	3.4	3.5	3.6
Fuel tank per engine horsepower	0.50 gal	0.59 gal	0.67 gal

Figure	M316C	M318C
Hydraulic power from the listed pump flow and relief pressure	191.9 hp	219.2 hp

M315C, M316C, and M318C: owner reports

Related account: “Injectors, engine noise and diagnostic tools”; “Speed, engine rpm and a cab that will not raise”: M312, M315, and M318.

M315C, M316C, and M318C: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	full-size excavator	Cat and the M315C, M316C, M318C	7

Topics named by those titles
Title topic	Titles
transmission and drive	2

Topic in the title	Threads	Share of matching threads
transmission and drive	2	29%

CAT M318c Cab Problems (Heavy Equipment Forums, 2024-12-13)
Caterpillar M 316 C Mono Excavator Opinions Performance Characteristics (Heavy Equipment Forums, 2024-02-02)
I Need Caterpillar M318c Electrical Schematic (Heavy Equipment Forums, 2023-08-07)
CAT M315c Transmission Pressure Low (Heavy Equipment Forums, 2022-07-14)

Used market for the M315C, M316C, and M318C — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Cat full-size excavator	17

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
M315C	4	2006 to 2007	$35,298	$58,071	$37,575	None shown
M316C	5	2005 to 2007	$39,900	$55,000	$45,000	8,642
M318C	8	2003 to 2005	$25,620	$55,000	$36,250	None shown

M315C, M316C, and M318C: recall reference — Dated CPSC search
Search date	Database	Names queried	Search result
2026-09-24	U.S. Consumer Product Safety Commission	Cat together with the full-size excavator M315C, M316C, M318C	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Cat M315C — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Cat M316C — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Cat M318C — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Cat M315C, M316C, and M318C — Heavy Equipment Forums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Cat M315C — MachineryTrader. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Cat — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

Cat M315C, M316C, and M318C: Configuration records

M315C

Specification	Source figure
Dimensions and weight
Height To Top Of Cab	10.34 ft
Tail Swing Radius	7.21 ft
Wheelbase	8.21 ft
Engine
Number Of Cylinders	4
Engine Model	3054E
Net Power	124 hp
Power Measured @	2,000 rpm
Displacement	268.6 cu in
Aspiration	turbocharged
Torque Measured @	1,400 rpm
Net Torque	368.8 lb-ft
Operational
Fuel Capacity	62.1 gal
Cooling System Fluid Capacity	10.4 gal
Hydraulic System Fluid Capacity	60.8 gal
Engine Oil Capacity	2.4 gal
Alternator Supplied Amperage	75 amps
Hydraulic Pump Flow Capacity	21.2 gpm
Front Diff Fluid Capacity	2.8 gal
Rear Diff Fluid Capacity	3.7 gal
Oscillating Axle Angle	18 degrees
Max Steering Angle	32 degrees
Tire Size	10.00-20 16PR
Operational Voltage	12 V
Swing Mechanism
Swing Torque	29,576 lb-ft
Swing Speed	10.5 rpm
Buckets
Reference Bucket Capacity	0.4 yd3
Minimum Bucket Capacity	0.4 yd3
Boom/Stick Option (Mex) 1
Max Vertical Wall Dig Depth	12.21 ft
Boom/Stick Option (Mex) 1	VA Boom 5200mm / Stick 2100mm
Transmission and speeds
Number Of Forward Gears	2
Number Of Reverse Gears	2
Transmission Type	powershift
Additional specifications
Ground Clearance	1.22 ft
Overall Width - Outriggers Down	12.03 ft
Operating Weight	36,707 lb
Maximum Bucket Capacity	1.2 yd3
Max Cutting Height	32.94 ft
Max Loading Height	22.81 ft
Max Reach Along Ground	29.24 ft
Max Digging Depth	18.34 ft
Shipping Length Of Unit	27.83 ft
Shipping Height Of Unit	13.06 ft
Max Travel Speed	21.2 mph

Source

M316C

Specification	Source figure
Dimensions and weight
Height To Top Of Cab	10.41 ft
Tail Swing Radius	7.52 ft
Wheelbase	8.54 ft
Engine
Number Of Cylinders	6
Engine Model	3056E DIT ATAAC
Net Power	138 hp
Power Measured @	2,000 rpm
Displacement	366 cu in
Flywheel Power	138 hp
Aspiration	Turbocharged with Aftercooler
Cylinders	6
Bore	3.9 in
Stroke	5 in
Eec 80/1269	138 hp
ISO 9249	138 hp
Maximum Torque - 1,400 Rpm	461 lb-ft
Torque Measured @	1,400 rpm
Net Torque	461 lb-ft
Operational
Fuel Capacity	81.9 gal
Cooling System Fluid Capacity	10.4 gal
Hydraulic System Fluid Capacity	60.8 gal
Engine Oil Capacity	4.3 gal
Alternator Supplied Amperage	75 amps
Hydraulic System Relief Valve Pressure	5,076 psi
Hydraulic Pump Flow Capacity	64.8 gpm
Front Diff Fluid Capacity	2.8 gal
Rear Diff Fluid Capacity	3.7 gal
Oscillating Axle Angle	18 degrees
Max Steering Angle	32 degrees
Tire Size	10.00-20
Swing Mechanism
Swing Torque	29,575 lb-ft
Swing Speed	10.5 rpm
Maximum Flow	21.1 gpm
Pressure	5,366 psi
Buckets
Reference Bucket Capacity	1 yd3
Minimum Bucket Capacity	0.5 yd3
Weights
Counterweight	8,160 lb
Dozer Blade	1,675 lb
Outriggers	2,250 lb
Rear - Dozer Only (1)	36,930 lb
Front And Rear Outriggers (1)	40,120 lb
Rear - Dozer, Front Outriggers (2)	38,250 lb
Rear - Dozer, Front Outriggers (1)	39,350 lb
Rear - Dozer Only (2)	35,940 lb
Front And Rear Outriggers (2)	39,020 lb
Hydraulic System
Travel Circuit	5,076 psi
Normal	5,076 psi
Implement/Travel Circuit	65 gpm
Medium Pressure	450 psi
Service Refill Capacities
Fuel Tank	81.9 gal
Hydraulic Tank	36 gal
Hydraulic System - Including Tank	61 gal
Engine Crankcase	4.8 gal
Powershift Transmission	0.8 gal
Front Steering Axle - Differential	2.1 gal
Rear Axle - Housing (Differential)	2.9 gal
Cooling	10.3 gal
Disk Brakes	0.5 gal
Boom/Stick Option (Mex) 1
Max Vertical Wall Dig Depth	12.14 ft
Boom/Stick Option (Mex) 1	VA Boom 5200mm / Stick 2100mm
Transmission and speeds
Number Of Forward Gears	2
Number Of Reverse Gears	2
Creeper Speed - 2nd Gear	8.1 mph
Forward/Reverse - 1st Gear	5.6 mph
Creeper Speed - 1st Gear	2.5 mph
Maximum Gradeability	69
Transmission Type	Hydrostatic
Tires
Standard	10.00-20 dual pneumatic
Optional	10.00-20 dual solid rubber; 18-R 19.5 XF single; 600/40-22.5 single; 11.00-20 dual
Cab
Cab/Fogs Option	ISO 10262
Additional specifications
Ground Clearance	1.24 ft
Overall Width - Outriggers Down	12.07 ft
Upper Structure Clearance	4.2 ft
Operating Weight	39,353 lb
Maximum Bucket Capacity	1.3 yd3
Max Cutting Height	33.01 ft
Max Loading Height	22.87 ft
Max Reach Along Ground	29.24 ft
Max Digging Depth	18.28 ft
Shipping Length Of Unit	28.06 ft
Shipping Height Of Unit	13 ft
Max Travel Speed	21.2 mph
Maximum Travel Speed	21 mph
Maximum Reach - Ground Level	30.3 ft

Source

M318C

Specification	Source figure
Dimensions and weight
Height To Top Of Cab	10.41 ft
Tail Swing Radius	8.21 ft
Wheelbase	8.54 ft
Engine
Number Of Cylinders	6
Engine Model	3056E DIT ATAAC
Net Power	151 hp
Power Measured @	2,000 rpm
Displacement	366 cu in
Flywheel Power	151 hp
Aspiration	Turbocharged with Aftercooler
Cylinders	6
Bore	3.9 in
Stroke	5 in
Eec 80/1269	151 hp
ISO 9249	151 hp
Maximum Torque - 1,400 Rpm	498 lb-ft
Torque Measured @	1,400 rpm
Net Torque	497.9 lb-ft
Operational
Fuel Capacity	101.8 gal
Cooling System Fluid Capacity	10.4 gal
Hydraulic System Fluid Capacity	67.4 gal
Engine Oil Capacity	4.3 gal
Hydraulic System Relief Valve Pressure	5,076 psi
Hydraulic Pump Flow Capacity	74 gpm
Front Diff Fluid Capacity	2.8 gal
Rear Diff Fluid Capacity	3.7 gal
Oscillating Axle Angle	18 degrees
Max Steering Angle	35 degrees
Tire Size	10.00-20
Swing Mechanism
Swing Torque	33,700 lb-ft
Swing Speed	10.5 rpm
Maximum Flow	29.6 gpm
Pressure	4,496 psi
Buckets
Reference Bucket Capacity	1 yd3
Minimum Bucket Capacity	0.5 yd3
Weights
Counterweight	8,820 lb
Dozer Blade	1,675 lb
Outriggers	2,250 lb
Rear - Dozer Only (1)	40,340 lb
Front And Rear Outriggers (1)	43,320 lb
Rear - Dozer, Front Outriggers (2)	41,560 lb
Rear - Dozer, Front Outriggers (1)	42,660 lb
Rear - Dozer Only (2)	39,240 lb
Front And Rear Outriggers (2)	42,220 lb
Hydraulic System
Travel Circuit	5,076 psi
Normal	5,076 psi
Implement/Travel Circuit	65 gpm
Medium Pressure	450 psi
Service Refill Capacities
Fuel Tank	102 gal
Hydraulic Tank	45 gal
Hydraulic System - Including Tank	67 gal
Engine Crankcase	4.8 gal
Powershift Transmission	0.8 gal
Front Steering Axle - Differential	2.1 gal
Rear Axle - Housing (Differential)	2.9 gal
Cooling	10.3 gal
Disk Brakes	0.5 gal
Boom/Stick Option (Mex) 1
Max Vertical Wall Dig Depth	12.08 ft
Boom/Stick Option (Mex) 1	VA Boom 5260 / Stick 2500
Transmission and speeds
Number Of Forward Gears	2
Number Of Reverse Gears	2
Creeper Speed - 2nd Gear	8.1 mph
Forward/Reverse - 1st Gear	5.6 mph
Creeper Speed - 1st Gear	2.5 mph
Maximum Gradeability	61.5% or 31.6 degrees
Transmission Type	Hydrostatic
Tires
Standard	10.00-20 dual pneumatic
Optional	10.00-20 dual solid rubber; 18-R 19.5 XF single; 600/40-22.5 single; 11.00-20 dual
Cab
Cab/Fogs Option	ISO 10262
Additional specifications
Ground Clearance	1.24 ft
Overall Width - Outriggers Down	12.07 ft
Upper Structure Clearance	4.19 ft
Operating Weight	41,557 lb
Maximum Bucket Capacity	1.5 yd3
Max Cutting Height	32.81 ft
Max Loading Height	22.87 ft
Max Reach Along Ground	30.52 ft
Max Digging Depth	19.89 ft
Shipping Length Of Unit	29.04 ft
Shipping Height Of Unit	13.03 ft
Max Travel Speed	21.2 mph
Maximum Travel Speed	21 mph
Maximum Reach - Ground Level	31 ft

Source

Compare Cat M315C, M316C, M318C

Boom/Stick Option (Mex) 1
Specification	M315C	M316C	M318C
Shipping Length Of Unit	27.83 ft	28.06 ft	29.04 ft
Shipping Height Of Unit	13.06 ft	13 ft	13.03 ft
Max Cutting Height	32.94 ft	33.01 ft	32.81 ft
Max Loading Height	22.81 ft	22.87 ft	22.87 ft
Max Reach Along Ground	29.24 ft	29.24 ft	30.52 ft
Max Vertical Wall Dig Depth	12.21 ft	12.14 ft	12.08 ft
Max Digging Depth	18.34 ft	18.28 ft	19.89 ft
Boom/Stick Option (Mex) 1	VA Boom 5200mm / Stick 2100mm	VA Boom 5200mm / Stick 2100mm	VA Boom 5260 / Stick 2500

Dimensions and weight
Specification	M315C	M316C	M318C
Wheelbase	8.21 ft	8.54 ft	8.54 ft
Tail Swing Radius	7.21 ft	7.52 ft	8.21 ft
Ground Clearance	1.22 ft	1.24 ft	1.24 ft
Overall Width - Outriggers Down	12.03 ft	12.07 ft	12.07 ft
Height To Top Of Cab	10.34 ft	10.41 ft	10.41 ft

Engine
Specification	M315C	M316C	M318C
Number Of Cylinders	4	6	6
Engine Model	3054E	3056E DIT ATAAC	3056E DIT ATAAC
Net Power	124 hp	138 hp	151 hp
Power Measured @	2,000 rpm	2,000 rpm	2,000 rpm
Displacement	268.6 cu in	366 cu in	366 cu in
Torque Measured @	1,400 rpm	1,400 rpm	1,400 rpm
Net Torque	368.8 lb-ft	461 lb-ft	497.9 lb-ft
Aspiration	turbocharged	Turbocharged with Aftercooler	Turbocharged with Aftercooler

Operational
Specification	M315C	M316C	M318C
Fuel Capacity	62.1 gal	81.9 gal	101.8 gal
Operating Weight	36,707 lb	39,353 lb	41,557 lb
Cooling System Fluid Capacity	10.4 gal	10.4 gal	10.4 gal
Engine Oil Capacity	2.4 gal	4.3 gal	4.3 gal
Front Diff Fluid Capacity	2.8 gal	2.8 gal	2.8 gal
Rear Diff Fluid Capacity	3.7 gal	3.7 gal	3.7 gal
Hydraulic System Fluid Capacity	60.8 gal	60.8 gal	67.4 gal
Hydraulic Pump Flow Capacity	21.2 gpm	64.8 gpm	74 gpm
Oscillating Axle Angle	18 degrees	18 degrees	18 degrees
Max Steering Angle	32 degrees	32 degrees	35 degrees
Tire Size	10.00-20 16PR	10.00-20	10.00-20

Swing Mechanism
Specification	M315C	M316C	M318C
Swing Speed	10.5 rpm	10.5 rpm	10.5 rpm
Swing Torque	29,576 lb-ft	29,575 lb-ft	33,700 lb-ft

Transmission and speeds
Specification	M315C	M316C	M318C
Transmission Type	powershift	Hydrostatic	Hydrostatic
Number Of Forward Gears	2	2	2
Number Of Reverse Gears	2	2	2
Max Travel Speed	21.2 mph	21.2 mph	21.2 mph

Buckets
Specification	M315C	M316C	M318C
Reference Bucket Capacity	0.4 yd3	1 yd3	1 yd3
Minimum Bucket Capacity	0.4 yd3	0.5 yd3	0.5 yd3
Maximum Bucket Capacity	1.2 yd3	1.3 yd3	1.5 yd3

More in Cat: 320C–320C S, 318B L/318B LN, 320D L–323D L.

Cat M315C, M316C, and M318C specifications

M315C, M316C, and M318C: owner reports

Sources for this page

Cat M315C, M316C, and M318C: Configuration records