York DU-03 Parts

3-ton rooftop unit · gas/electric and electric/electric · 30 models

1

Find your model number. It’s on the metal label on the side of the unit. It starts with DU-03.

2

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Parts for York DU-03 units (128)

Compressors & coils

Heat Exchanger, 4 Tube Part # S1-37312894704 $2,807.03 View & buy → Heat Exchanger, 2 Tube Pkg Part # S1-37312894702 $2,347.84 View & buy →

Motors

Blower Motor, 1.5 HP, 1725 RPM, 208-230/460V 3-Ph, 60/50 Hz Part # S1-02419623718 $815.61 View & buy → Venter Motor, 1/40 HP, 3200 RPM, clockwise, 208/230V 1-phase 60 Hz Part # S1-02424115018 $304.92 View & buy → Venter Draft Inducer Motor 1/40 HP, 3200 RPM, CW, 208/230V 1-Phase 60 Hz Part # S1-02435322000 $296.95 View & buy → Venter Motor, 1/40 HP, 3200 RPM, clockwise, 460V 1-phase 60 Hz Part # S1-02424115019 $348.64 View & buy → Venter Motor, 1/40, 3000/2400, CW, 208/230V 1-Phase 60Hz Part # S1-02435584000 $440.60 View & buy →

Fans & blower wheels

Blower Wheel, Venter, 4 x 1, counter-clockwise, 1/4 Bore Part # S1-02632623700 $84.83 View & buy → Blower Wheel, 11 x 10, Reverse, 1 Bore Part # S1-02633326700 $381.49 View & buy → Blower Wheel, 11 x 10, clockwise, 1/2 Bore Part # S1-02619654012 $270.17 View & buy → Blower Housing with Wheel Part # S1-02625539700 $702.41 View & buy →

Gas valves & burners

Orifice, Burner #42 (.0935) Part # S1-02920423042 $11.60 View & buy → Inshot Burner Part # S1-02921121000 $46.22 View & buy → Orifice, Pilot #56 (.0465) Part # S1-02920422056 $15.96 View & buy → Manifold, Gas Part # S1-02927109000 $182.50 View & buy → Gas Valve, Honeywell VR8204M1026, Natural Gas, 24V, 60 Hz, 1/2 x 1/2 in. Part # S1-VR8204M1026 $291.18 View & buy → Gas Valve, Natural Gas, 1/2 x 1/2 in. Part # S1-6257916 $150.60 View & buy →

Igniters & flame sensors

Flame Sensor Part # S1-02530802000 $39.52 View & buy → Gas Tube, Pilot, GV-WR Part # S1-36393730000 $107.10 View & buy → Igniter, Spark with 21 in. Lead Part # S1-02530372000 $80.72 View & buy → Spark Igniter, PSE-Y52 Part # S1-02547816000 $26.43 View & buy → Rollout Control, 290 Open, 210 Close, SPST Part # S1-02541313000 $19.31 View & buy → Orifice, Pilot #63 (.037) Part # S1-02920422063 $21.95 View & buy → Manifold Assembly Tube, Carryover Part # S1-02927095000 $89.48 View & buy → Spark Ignition Control Board, UT, 24V Part # S1-03109161000 $202.50 View & buy → Carryover Tube Part # S1-07312892702 $300.28 View & buy → Gas Tube, Pilot, SERIES-5 Part # S1-6257921 $17.37 View & buy → Temperature Sensor Part # S1-02541274000 $41.32 View & buy → Temperature Control, 55 Open, 45 Close SPST 6" Lead Part # S1-02538585001 $42.36 View & buy → Manifold Assembly Tube, Carryover Part # S1-02927096000 $83.17 View & buy → Pressure Switch, Air Adjustable .05-12 on Rise, SPDT Part # S1-02432007000 $471.27 View & buy → Temperature Control, 240 Open, 210 Close Part # S1-02532694000 $54.25 View & buy → Gas Valve, HW VR8204Q2954 Part # S1-02541091000 $554.27 View & buy →

Electrical parts & harnesses

Run Single Capacitor, 7.5MFD, 370V, Flat Part # S1-02420045700 $14.79 View & buy → Contactor 2PNO, 20A, 24V Part # S1-02425965000 $47.38 View & buy → Time Delay Relay, Venter Motor Part # S1-02426089000 $60.14 View & buy → Harness Wire, Economizer Part # S1-02541251000 $52.48 View & buy → Motor Harness Fan Part # S1-02547299000 $39.75 View & buy → Elect Wire, Flame Sensor, 18 AWG, Org Part # S1-37303481717 $28.94 View & buy → Wiring Harness, Control, S12, S13, S14, S4 Part # S1-02541032000 $67.43 View & buy → Wiring Harness, 3-PIN, UCB to Contactor, S2 Part # S1-02541042000 $18.15 View & buy → Wiring Harness, Female, 4-PIN, Gas, S12 Part # S1-02541092000 $27.52 View & buy → Wiring Harness, 9-PIN, Icb, Gas, P1 Part # S1-02541029000 $25.78 View & buy → Harness Wire Part # S1-02547826000 $13.82 View & buy → Harness Wire, 543, Economizer Part # S1-02541312000 $36.68 View & buy → Harness Wire, Jumper, 916/YEL, No Economizer Part # S1-02538719000 $7.50 View & buy → Transformer, 460V, 230V, 150VA, 60Hz Part # S1-02541034000 $100.44 View & buy → Wiring Harness Part # S1-02538700000 $56.40 View & buy → Wiring Harness, Smoke Detector Part # S1-02538722000 $24.35 View & buy → Exhaust Tube Part # S1-02639307000 $37.49 View & buy → Breaker, Circuit, 3 Pole, 30A, 240V Part # S1-02441161000 $260.01 View & buy → Breaker, Circuit, 3 Pole, 35A, 240V Part # S1-02441162000 $290.90 View & buy → Simplicity Lite Control Board, Gas/Electric, 4S Part # S1-03102993000 $266.07 View & buy → Breaker, Circuit, 20A, 250V, 1 Pole Part # S1-02427517000 $31.97 View & buy → Relay Control, 24V, 60Hz, SPST Part # S1-02436082000 $20.39 View & buy → Relay Control, 24V, 60Hz, DPDT Part # S1-02436110000 $73.30 View & buy → Relay Control, 24VAC, 60Hz, Dpst (No) Part # S1-02436138000 $49.81 View & buy → Breaker, Circuit, 3 Pole, 15A, 600V Part # S1-02441164000 $536.47 View & buy → Connector Plug 9 Circuit Part # S1-02521192000 $4.67 View & buy → Holder Fuse, 6 Pole, 60 Amp, 250V Part # S1-02526343000 $176.73 View & buy → Fuse 30 Amp 600V Part # S1-02532733001 $47.21 View & buy → Transformer, 240/480V, 120/240V/3000VA, 60 HZ Part # S1-02532762000 $1,890.16 View & buy → Transformer, 460V, 230V/115VA, 60 HZ Part # S1-02539925000 $227.49 View & buy → Wiring Harness Part # S1-02541040000 $185.16 View & buy → Electrical Harness Part # S1-02541093000 $26.59 View & buy → Electric Harness Part # S1-02541208000 $20.17 View & buy → Harness Wire Part # S1-02547825000 $32.81 View & buy →

Switches, sensors & controls

Rollout Control, 225 Open, 145 Close, SPST Part # S1-02526392011 $25.15 View & buy → Limit Control, 105 Open, 165 Close, SPDT Part # S1-02531830000 $30.90 View & buy → Temperature Control, Evaporator, 26 Open, 45 Close, SPST Part # S1-02527727001 $47.01 View & buy → Temperature Control, 55 Open, 45 Close SPST Harness Part # S1-02538585000 $43.54 View & buy → Temperature Control, Freeze, 26 Open, 41 Close, SPST Part # S1-02541046000 $56.46 View & buy → Temperature Control, Low Ambient, 55 Open, 45 Close, SPST Part # S1-02541047000 $48.58 View & buy → Detector, Smoke, Duct Part # S1-02922291000 $296.01 View & buy → Sample Tube, 22.88 Part # S1-02639264001 $44.81 View & buy → Limit Switch, 150/110(O/C), SPST, Fuse Auto Part # S1-02522273001 $39.63 View & buy → Limit Switch, 140/100(O/C), SPST, Fuse Auto Part # S1-02522273002 $37.16 View & buy →

Heaters

Sequencer Relay, Heat 24V Part # S1-02419082031 $105.23 View & buy → Sequencer Relay, Heat 24V Part # S1-02419082034 $96.03 View & buy → Heater, Electric 21.2KW, 240V, 6 Element Part # S1-02526318002 $459.74 View & buy → Heater, Electric 6.8KW, 480V, 6 Element Part # S1-02526318010 $386.43 View & buy →

Air filters

Air Filter, Cleanable, 13-5/8 x 19-5/8 x 1 Part # S1-02625514000 $29.17 View & buy →

Bearings & shafts

Ball Bearing Bracket, A12A Part # S1-02647810000 $26.16 View & buy →

Hardware & fittings

Orifice, Fan 24 Inch Part # S1-06389756000 $151.12 View & buy → Shaft, Blower 1 x 21.50 Long Part # S1-00107115000 $128.13 View & buy → Housing, Blower, Belt Drive, W/Wheel 12 x 10 Part # S1-02625539701 $677.06 View & buy → Belt Drive, A36, PL=37.3 Part # S1-02809573700 $42.71 View & buy → Sheave, Fixed 1 Groove, 1" Bore, AK61 Part # S1-02812383700 $57.63 View & buy → Sheave, Variable 1 Groove, 0.875" Bore, 1VL40 Part # S1-02812385700 $42.58 View & buy → Burner, Bracket Part # S1-07305908000 $46.45 View & buy → Bracket, Heat Exchanger Part # S1-07320260000 $14.95 View & buy → Baffle, Heat Exchanger Part # S1-07313498000 $34.49 View & buy → Plate, Shoot-Thru 5 Tube Part # S1-07313687005 $55.43 View & buy → Plate, Balance, 5 Burner Part # S1-07312880005 $68.00 View & buy → Guard Fan, 24 Inch, Black, Flat, W/Motor Mnt Part # S1-02647776000 $190.45 View & buy → Belt Drive, A35, PL=36.3 Part # S1-02809572700 $48.12 View & buy → Hood, Rain, Flue, SS, (Vent Air Outlet) Part # S1-36393686001 $135.47 View & buy → Tube, Gas, Pilot, GV-HW Part # S1-37306660000 $107.75 View & buy → Plate, Ventor, 2.125 Orifice Part # S1-06390038023 $29.94 View & buy → Plate, Balance, 2, 3&4 Burner Part # S1-07327365000 $67.13 View & buy → Door, Support Coil, Standard, No Conv Part # S1-37312431102 $238.14 View & buy → Bracket, Control Mounting Part # S1-07327364000 $69.47 View & buy → Ball Joint Part # S1-02908786700 $17.56 View & buy → Seal Damper Part # S1-02918442000 $23.22 View & buy → Seal Damper Part # S1-02918443000 $14.95 View & buy → Seal Damper Part # S1-02918444000 $151.07 View & buy → Bracket, Blade, Damper with Pivot Part # S1-02918448000 $25.19 View & buy → Cover, Filter, Hood, Rain Part # S1-06389630700 $134.38 View & buy → Bracket, Motor Part # S1-07321446000 $19.08 View & buy → Blade Damper, 5.25 WD x 28.19 Long Part # S1-07326252000 $64.30 View & buy → Air Damper Part # S1-37321440000 $755.16 View & buy → Plate, Ventor, 1.719 Orifice Part # S1-06390038029 $29.28 View & buy → Baffle, Air 2 Tube Part # S1-06393668003 $79.61 View & buy → Panel, Access Control Box Part # S1-37316466000 $391.87 View & buy → Latch, Z Part # S1-07316446000 $28.32 View & buy → Bracket, Switch Mount, 3-6T, Mcd Part # S1-07328310000 $78.49 View & buy → Panel, Control Box W/Disconnect 3-6 Ton Part # S1-07342625000 $110.93 View & buy → Guard, Coil 85 x 29.75 Black Part # S1-02625570017 $841.27 View & buy → Plate, Latch Cool/Electric Heat Part # S1-07301931000 $21.15 View & buy → Door, Support Coil, Standard, Conv Part # S1-37363686000 $237.95 View & buy → Bracket, Limit Switch Part # S1-07327436000 $48.39 View & buy → Plate, Vent Stainless Steel Part # S1-02639252000 $62.44 View & buy →

Other parts

Bearing, Ball Pillow Block Part # S1-02920424700 $160.50 View & buy → Scroll, Vent Part # S1-07305376000 $44.70 View & buy → Plate, Vent Part # S1-07305377000 $33.77 View & buy → Spacer, 1/4 OD x .032 Wall x 1, Aluminum Part # S1-02322458000 $4.99 View & buy → Blower Assembly with Housing, Wheel, Shaft and Bearings Part # S1-02642589000 $986.35 View & buy → Shaft, Fan, Steel, 1.00 Dia. x 19.31 Long Part # S1-02926864000 $66.36 View & buy →

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See all 30 York DU-03 model numbers

From York's own parts data (York SmartSearch, Nov 2026).

DU-03C00NTAAA1A
DU-03C00NWAAA2
DU-03D07PWABA2
DU-03E07NWAAA1A
DU-03E20NTAAA1A
DU-03N05NTAAA1A
DU-03N05NTAAA2
DU-03N05NTBAA1A
DU-03N05NTHAB1
DU-03N05NTHAB1A
DU-03N05PTAAA1A
DU-03N05PTBAA1
DU-03N05PWAAA2
DU-03N05RWAAC2
DU-03N11ATAAA2
DU-03N11NTAAA2
DU-03N11NTABH1A
DU-03N11NTDAA1
DU-03N11NWAAA2
DU-03N11NWAAC1A
DU-03N11PTAAA1A
DU-03N11PTAAA2
DU-03N11PTDAA1
DU-03N11PTDAA1A
DU-03N11PTFAA1A
DU-03N11PWAAA2
DU-03N11PWHBA2
DU-03N11PWSAA2
DU-03N11PWTBH1A
DU-03S11PTFAA1