Model Spotlight

Case SR175B Skid Steer Loader: Alpha-Series Radial-Lift Tier 4 Final

The Case SR175B is part of Case’s alpha-series radial-lift skid steer loader range — Tier 4 Final compact diesel, hydrostatic dual-path drivetrain, and the alpha-series cab with electronic engine controls and modern operator ergonomics. Radial-lift geometry is optimized for dig-and-load work at ground level, loading trucks, and pallet duty cycles.

Broken Tractor Editorial Team• Updated May 2026• 8 min read

Where the SR175B fits in the Case skid steer / CTL line

The SR175B sits in Case’s alpha-series SR (radial-lift) skid steer range between the Case SR175 and the Case SR200. The B-designation reflects the alpha-series refresh: Tier 4 Final aftertreatment, alpha-series cab, electrohydraulic joystick controls, and refreshed electronic engine controls relative to the earlier non-B alpha machines.

Radial-lift loader geometry distinguishes the SR-series from the vertical-lift SV-series counterparts. The single-arc lift pattern keeps the bucket out near the operator’s reach through the working range — well suited to ground-level digging, loading trucks, and pallet work where reach matters more than full lift height.

Case SR175B Skid Steer Loader - Quick Specs

Class: Skid Steer Loader
Generation: SR (Alpha-B) Radial-Lift
Engine: Tier 4 Final Compact Diesel
Aftertreatment: DPF + SCR (DEF)
Drivetrain: Hydrostatic Dual-Path
Lift Geometry: Radial
Vertical-Lift Counterpart: Case SV-Series
Serial Plate: RH loader arm/frame near front hinge, below cab

Locating your serial number On the Case SR175B the serial number plate is on the right-hand side of the loader arm or main frame near the front hinge, just below the operator cab. Always verify this number before ordering parts — alpha-series build changes affected aftertreatment, control valves, and harness configurations through the production run.

Engine, hydraulics, and drivetrain

The SR175B runs a Tier 4 Final compact diesel through a hydrostatic dual-path drivetrain. The engine carries common-rail high-pressure fuel injection with electronic engine control, cooled EGR, DPF for particulate control, and SCR with DEF dosing for NOx control. Aftertreatment service intervals and DEF supply are part of the maintenance picture — not optional.

Loader hydraulics use a load-sensing piston pump with electrohydraulic control valves and direct-acting cylinders for lift and tilt. The radial-lift loader geometry gives a single-arc reach pattern — best matched to ground-level digging, loading trucks, and pallet work where the lift arc keeps the bucket out near the operator’s reach.

The hydrostatic dual-path drive uses a tandem variable piston pump feeding two drive motors with planetary final reductions to the chain cases. Joystick control modulates pump displacement for tracking, counter-rotation, and skid steering.

Common service items on the SR175B

Engine internals: Tier 4 Final compact diesel - pistons, rings, sleeves, bearings, gaskets. Common-rail high-pressure injection components.
Tier 4 aftertreatment: DPF service intervals, DEF tank and dosing module, SCR catalyst, EGR cooler service, NOx sensors.
Fuel system: Common-rail injectors, lift pump, very tight water-separator filtration. Clean fuel is non-negotiable on Tier 4 Final common-rail systems.
Cooling system: Radiator, water pump, thermostat, fan, charge-air cooler, hoses, belts.
Hydraulics: Loader lift and bucket tilt cylinder seal kits (86570919 / 86570931 / 86570922 cross-fit on NH/Case alpha-series), piston-pump rebuilds, electrohydraulic control valves.
Drivetrain: Hydrostatic dual-path pumps and drive motors, charge pump, filters, drive chains and chain case service.
Bucket coupler hardware: 47396814K bucket pin kit cross-fits L216-L230, C232-C238, SR160-SR250, SV185-SV300, TV380, TR270-TR340 - high-volume coupler service kit.
Hardware: 191048A2 axle stud & nut cross-fits broadly across the Case skid steer line.
Brakes / control: Park brake, control linkage, 48139268 control shock absorber on Case/NH alpha-series control valves.
Electrical / ECU: Engine ECU, machine controller, instrument cluster, sensors, wiring harness, telematics module.
Cab / operator station: Cab HVAC, seat, gauges, joystick controls, cab glass, 47405956 windshield wiper blade on cab-equipped units.

Tier 4 Final aftertreatment - service implications The SR175B’s DPF and SCR systems are reliable when fed clean fuel and quality DEF, but they require attention. DEF tank must stay topped with quality fluid — poor DEF damages the SCR catalyst. DPF requests periodic high-temperature regenerations; suppressing those leads to forced derate. NOx sensors fail occasionally and trigger derate conditions if not replaced. Factor aftertreatment service into the maintenance budget on any SR175B running production hours.

Parts and cross-fit components for the Case SR175B

Category	Common Parts	Browse
Engine	Tier 4 Final compact diesel internals - pistons, rings, sleeves, gaskets	Browse Engine
Aftertreatment	DPF, DEF dosing, SCR, EGR components, NOx sensors	Browse Aftertreatment
Fuel System	Common-rail injectors, lift pump, filters, water separator	Browse Fuel System
Cooling	Radiator, water pump, charge-air cooler, hoses, belts	Browse Cooling
Hydraulics	Lift/tilt cylinder seal kits, piston pump, electrohydraulic valves	86570919 Tilt Seal Kit
Drivetrain	Hydrostatic pumps/motors, charge pump, filters, drive chains	Browse Drivetrain
Bucket Coupler	47396814K bucket pin kit (cross-fits L216-L230, C232-C238, SR160-SR250, SV185-SV300, TV380, TR270-TR340)	47396814K Pin Kit
Brakes / Control	48139268 control shock absorber, park brake, linkage	48139268 Shock Absorber
Cab	47405956 wiper blade, HVAC, joystick controls, cab glass	47405956 Wiper Blade
Electrical / ECU	ECU, machine controller, harness, instrument cluster, sensors	Browse Electrical
Operator Station	Seats, joysticks, cab glass, gauges	Browse Operator Station

Need a part for your Case SR175B Skid Steer Loader?

Aftertreatment components, common-rail injection parts, hydrostatic pumps, and cylinder seal kits are the highest-value items on an SR175B. Call our parts team with your serial number.

Request a Part

What to verify before ordering

Aftertreatment generation. Tier 4 Final configuration varies by build year — confirm DPF/DEF/SCR layout before ordering.
Serial number. Confirm the serial on the Case SR175B before ordering year-specific parts.
Engine serial. Internal engine parts must match the engine serial number.
Hydraulic cylinder bore. Cylinder seal kit fit depends on bore dimension — measure before ordering.
Cab vs. ROPS canopy. Operator station equipment varied between configurations — HVAC, wiper, and harness availability follows the cab option.
Control configuration. Electrohydraulic joystick vs. mechanical control configurations affect valve and harness part numbers.

Why the SR175B still earns a paycheck

The Case SR175B is an alpha-series radial-lift skid steer covering ground-level dig-and-load duty cycles, loading trucks, pallet work, and any application where the radial-lift geometry’s reach pattern fits the job. The alpha-series cab, Tier 4 Final compliance, and electrohydraulic controls make it a current production-class machine that fits the way most jobsites and rental fleets actually run today.

Maintenance priorities on an SR175B: clean fuel and tight water separation for common-rail injection, DPF regen behavior, DEF quality, hydrostatic charge pressure, drive-chain tension, and cylinder seal replacement when leaks develop. Broken Tractor maintains parts coverage across the SR alpha-series and the cross-fit components that bridge the Case and New Holland skid steer/CTL platforms.