Model Spotlight

John Deere 350 P-Tier Excavator: Modern 35-Ton Tier 4 Final Construction Excavator

The John Deere 350 P-Tier is a modern P-Tier 35-Ton construction excavator built on the JD/Hitachi platform-shared chassis. Tier 4 Final emissions, refined cab and controls, advanced hydraulic management, and broad parts cross-fit across the JD G-Tier and P-Tier excavator family make it a production-grade pick for current construction fleets.

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

Where the 350 P-Tier fits in the JD excavator line

The 350 P-Tier sits between the 345 P-Tier and 380 P-Tier in the modern JD P-Tier construction excavator lineup. It represents the current production 35-Ton class JD excavator, running Tier 4 Final emissions and the latest cab and control refinements. Direct-fit service items like the PG200046 swing bearing (350DLC/350GLC/2954D/3754D) and FYA00037707 cab assembly (250G/290G/350G) carry forward platform commonality with the G-Tier predecessors.

JD 350 P-Tier Excavator - Quick Specs

Class: 35-Ton Excavator
Generation: P-Tier (modern)
Engine: Tier 4 Final diesel
Aftertreatment: DPF + SCR (DEF)
Drive: Hydrostatic, steel-track undercarriage
Predecessor: JD 350G LC
Family: JD P-Tier Construction Excavator

Locating your serial number On the John Deere 350 P-Tier the serial number plate is mounted on the upper frame near the cab entry, typically on the right-hand side beneath the door threshold or beside the operator’s seat. Always verify the serial number before ordering parts to ensure proper fitment - the P-Tier production run includes running changes that affect part numbers.

JD/Hitachi platform sharing and what it means for parts

John Deere’s construction excavators are built on the JD/Hitachi shared platform, meaning many service parts carry across multiple JD G-Tier and P-Tier models as well as Hitachi-branded equivalents. For owners of a 350 P-Tier this is a real advantage - cross-fit components like the AT317252 cross-pin fit a broad JD family including the 180CW, 190DW, 200/200C/200G, 210G/210P, 225C/225D, 230GW, 245G, 2054, 2154D, and many others.

That platform sharing means parts availability stays strong even as machines age. Pump, valve, cylinder, and undercarriage components have wide cross-fit applicability across the family.

Engine, hydraulics, and undercarriage

The 350 P-Tier runs a Tier 4 Final diesel paired with DPF and SCR aftertreatment, feeding a hydrostatic drive system into a steel-track undercarriage. The Tier 4 Final emissions package requires DEF (diesel exhaust fluid) dosing and periodic DPF regeneration cycles - clean fuel and quality DEF are non-negotiable on this generation.

The hydraulic system uses variable-displacement piston pumps with electronic flow management, providing fuel-efficient operation and smooth multi-function control. The steel-track undercarriage uses the proven JD/Hitachi excavator pattern with sealed-and-lubricated track chains, planetary final drives, and JD-pattern rollers and idlers.

Common service items on the 350 P-Tier

Engine: Tier 4 Final diesel internals - pistons, rings, sleeves, bearings, gasket kits.
Aftertreatment: DPF service, DEF dosing units, SCR catalyst, NOx sensors, DPF pressure sensors.
Cooling: Radiator, hydraulic oil cooler, EGR cooler, water pump, thermostat, heat exchanger.
Hydraulics: Main pumps, control valve, swing motors, travel motors, boom/arm/bucket cylinders, seal kits.
Boom pins: AT317252 cross-pin - broad JD family cross-fit.
Swing bearing: PG200046 swing bearing (350DLC/350GLC/2954D/3754D).
Undercarriage: Steel track chains, shoes, idlers, rollers, sprockets, final drives.
Cab and electrical: FYA00037707 cab assembly, glass, alternator, starter, sensors, harnesses, ECU, monitor display.

Tier 4 Final aftertreatment - service implications The 350 P-Tier’s DPF and SCR systems are reliable when fed clean fuel and quality DEF, but they require attention. DEF tank must stay topped up. DPF will request periodic high-temperature regenerations. NOx sensors fail occasionally and trigger derate conditions if not replaced promptly. For customers running 350 P-Tier machines in production, factor aftertreatment service into the maintenance budget.

Parts we carry for the John Deere 350 P-Tier

Category	Common Parts	Browse
Engine	Tier 4 Final diesel pistons, rings, sleeves, gaskets	Browse Engine Parts
Aftertreatment	DPF, SCR catalyst, DEF dosing units, NOx sensors	Browse Aftertreatment
Cooling	Radiators, oil coolers, water pumps, hoses	Browse Cooling
Hydraulics	Main pumps, valves, motors, cylinders, seal kits	Browse Hydraulics
Boom Pins	AT317252 cross-pin (broad JD family fit)	AT317252 Cross-Pin
Swing Bearing	PG200046 (350DLC/350GLC/2954D/3754D)	PG200046 Swing Bearing
Undercarriage	Steel tracks, shoes, idlers, rollers, sprockets	Browse Undercarriage
Cab / Electrical	Cab glass, alternator, starter, sensors, harness, ECU	Browse Cab / Electrical

Need a part for your John Deere 350 P-Tier Excavator?

Tier 4 Final engine components, hydraulic pumps, swing bearings, and boom pins are the highest-value items on a 350 P-Tier. Call our parts team with your serial number.

Request a Part

What to verify before ordering

Serial number. Confirm the serial on the upper frame before ordering year-specific parts. P-Tier production includes running changes.
Engine and aftertreatment serial. Tier 4 Final emissions parts are serial-specific - DPF, SCR, dosing units, and sensors can vary across the production run.
Aftertreatment generation. DPF and SCR revisions saw running changes. Match against aftertreatment serial tags.
Boom-pin position. AT317252 cross-pin fits a broad JD family - confirm pin position (boom, arm, bucket) before ordering.
Hydraulic pump generation. Main pump and valve part numbers can vary across production.
Undercarriage configuration. Track shoe width and undercarriage length variants exist - confirm against existing components.

Why the 350 P-Tier still earns a paycheck

The 350 P-Tier stays in service because modern P-Tier 35-Ton JD excavators deliver Tier 4 Final fuel efficiency and operator-station refinements that contractors rely on for production work. JD/Hitachi platform parts sharing means service parts are widely available even years into the machine’s life - cross-fit components across the G-Tier and P-Tier construction excavator line keep downtime short.

Maintenance priorities on a 350 P-Tier: clean fuel and quality DEF (Tier 4 Final common-rail injectors and SCR catalysts don’t tolerate contamination), aftertreatment service discipline, clean cool hydraulic oil, boom-pin service using the broad AT317252 cross-fit, undercarriage replacement on schedule, and cab and electrical service. Broken Tractor maintains JD P-Tier construction excavator coverage alongside the broader G-Tier family.