York JA4ZJS05 Parts

4-ton rooftop unit · gas/electric · 12 models

1
Find your model number. It’s on the metal label on the side of the unit. It starts with JA4ZJS05.
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Parts for York JA4ZJS05 units (128)

Compressors & coils

Heat Exchanger, 4 Tube SS 3-5T 15K Part # S1-02645739004 $2,892.56 View & buy → Distributor, Venturi, 8 Outlet, 1/2 x 3/16, 20" Part # S1-02211555000 $132.50 View & buy → Distributor, No Valve, 8 Tube, .625 x .187, 25.5 in Part # S1-02211612000 $338.27 View & buy → Evaporator Coil, ZJ049, G6 Part # S1-37343101000 $6,160.93 View & buy → Evaporator Coil, ZJ049, GEN6, Predator Part # S1-37344700000 $5,666.49 View & buy → Condenser Coil, 28INX18MM, Left, Retrofit Part # S1-37345046000 $2,706.42 View & buy → Condenser Coil, 28INX18MM, Right, Retrofit Part # S1-37345048000 $2,911.73 View & buy → Condenser Coil, 36INX18MM, Right, Retrofit Part # S1-37345059000 $3,969.22 View & buy → Condenser Coil, 36INX18MM, Left, Retrofit Part # S1-37345069000 $3,968.08 View & buy →

Motors

Blower Motor, 2 HP, 1725 RPM, 208-230/460V 3-Ph, Reversible Part # S1-02419623716 $1,168.72 View & buy → Condenser Fan Motor, 1/3 HP, 850 RPM, counter-clockwise, 230V 1-phase 60 Hz, with Rain Shield Part # S1-6007531 $374.19 View & buy → Condenser Fan Motor, 1/3 HP, 850 RPM, counter-clockwise, 460V 1-phase 60 Hz, with Rain Shield Part # S1-6007532 $387.52 View & buy → Blower Motor, 1.5, 1725/1, Reverse, 575V 3-Phase 60Hz Part # S1-02419623707 $1,056.71 View & buy → Power Exhaust Motor, 3/4, 208/230V Part # S1-02435719000 $830.58 View & buy →

Fans & blower wheels

Blower Assembly W/Housing, Wheel, Shaft and Bearings Part # S1-02646421000 $855.59 View & buy → Blower Wheel, Indoor, CW, 12 x 9 Part # S1-02648075000 $548.60 View & buy → Propeller Fan, 24, clockwise, 3-24, 1/2 in. Bore Part # S1-02645716000 $243.90 View & buy → Propeller Fan, 24 Inch, CW, 3-25, 1/2 Inch Bore Part # S1-02651811000 $206.63 View & buy → Propeller Fan, Power Exhaust Part # S1-02642178000 $318.37 View & buy →

Gas valves & burners

Burner, Gas Part # S1-02924489000 $36.79 View & buy →

Igniters & flame sensors

Orifice, Burner #49 (.073) Part # S1-02920423049 $21.45 View & buy → Manifold, Gas, Short W/4 #49 Orifice, 4 Plg Part # S1-02927081000 $186.99 View & buy → Pressure Switch, Air Adjustable .05-12 on Rise, SPDT Part # S1-02432007000 $471.27 View & buy → Enthalpy Sensor, Solid State Part # S1-02546381000 $339.27 View & buy → Sensor, Discharge (Mixed Air), 9RT1H542-1 Part # S1-02541266000 $135.95 View & buy →

Valves & filter driers

TXV Valve, 3/8 x 1/2 ODF, 85.0 PSIG, Sporlan Part # S1-02541089000 $212.15 View & buy → TXV Valve, 3/8 x 5/8 ODF, Evaporator, Sporlan Part # S1-02545296000 $240.23 View & buy →

Electrical parts & harnesses

Harness Wire, S5, Lite Part # S1-02543203000 $32.05 View & buy → Harness Wire, S2, Lite Part # S1-02543205000 $15.60 View & buy → Wiring Harness, S5/P7 Part # S1-02543251000 $38.43 View & buy → Wiring Harness, SD S13, UCB SD, To Economizer S7 Part # S1-02543263000 $15.60 View & buy → Wiring Harness, UCB S4 to Economizer S7 Part # S1-02543264000 $32.61 View & buy → Simplicity Lite Control Board, Gas/Electric, 4S Part # S1-03102993000 $266.07 View & buy → Motor Actuator, 24V, M9208, Run 7.9 W Part # S1-02544134000 $855.40 View & buy → Breaker, Circuit, 3 Pole, 15A, 600V Part # S1-02441164000 $536.47 View & buy → Relay Control, 24V, 60Hz, SPST Part # S1-02436082000 $20.39 View & buy → Breaker, Circuit, 3 Pole, 20A, 600V Part # S1-02441156000 $530.78 View & buy → Transformer, 240/480V, 120/240V/3000VA, 60 HZ Part # S1-02532762000 $1,890.16 View & buy → Plug, 12 Circuit with Jumper Part # S1-02535366010 $6.62 View & buy → Wiring Harness, Johnson BAS Part # S1-02541035000 $39.97 View & buy → Relay Control, 24V, 50/60 HZ, Dpst Part # S1-02425910700 $59.12 View & buy → Relay Control, Solid State Part # S1-02432027000 $246.03 View & buy → Breaker, Circuit, 3 Pole, 30A, 240V Part # S1-02441161000 $260.01 View & buy → Harness Wire, P4 Part # S1-02537430009 $38.84 View & buy → Harness Wire, Johnson Part # S1-02540996000 $126.74 View & buy → Harness Wire, S1, UCB Part # S1-02546665000 $22.80 View & buy → Harness Wire, S2, UCB, Sngl Stage Part # S1-02546668000 $20.64 View & buy → Harness Wire, S3, UCB, GH, Two Stage Part # S1-02546670000 $27.60 View & buy → Harness Wire, S9, UCB, Sngl Stage, VFD Part # S1-02546760000 $20.64 View & buy → Harness Wire, S10, UCB, Sngl Stage Part # S1-02546762000 $15.98 View & buy → Harness Wire, P11, Rat/Sat Part # S1-02546767000 $35.14 View & buy → Harness Wire, S20, Economizer Part # S1-02546773000 $16.51 View & buy → Harness Wire, S22, UCB, Aps/Dfs Part # S1-02546776000 $23.39 View & buy → Wiring Harness, S3, UCB, GH, Two Stage Part # S1-02547853000 $28.80 View & buy → Wiring Harness, S15, UCB-Economizer Part # S1-02547856000 $15.00 View & buy → Wiring Harness, S17, Economizer Part # S1-02547858000 $21.13 View & buy → Capacitor, 100MFD, 50VDC, Metalized Polyester Part # S1-03101956000 $26.59 View & buy → Wiring Harness, 822, 823, 871, 872, Grn, Pred, S18 Part # S1-37344690000 $48.79 View & buy → Run Single Capacitor, 12.5MFD, 370V, Flat Part # S1-02425899000 $18.68 View & buy → Relay 24V 20 Amp Part # S1-02538623000 $106.16 View & buy → Harness, Wiring IC P27 Part # S1-02538903004 $131.99 View & buy → Harness, Wiring IC S27 Part # S1-02538903005 $126.21 View & buy → Harness, Wiring IC P1 Part # S1-02538903014 $76.77 View & buy → Wiring Harness Part # S1-02541253000 $32.61 View & buy → Harness Wire, Sensor, Smoke Detector Part # S1-02543285000 $68.89 View & buy → Harness Wire, P16, Dfs Part # S1-02546771000 $14.18 View & buy → Actuator Motor, Damper Part # S1-02547236000 $1,147.36 View & buy →

Switches, sensors & controls

Switch, Limit 235/205 O/C Auto Reset Part # S1-02435888000 $21.38 View & buy → Block, Terminal Part # S1-02526380000 $119.52 View & buy → Temperature Control, 26 Open, 38 Close, SPST Part # S1-02543201000 $34.09 View & buy → Refrigerant Pressure Control, 625 Open / 525 Close Flare, PSIG Part # S1-5992116 $65.18 View & buy → Damper, O.a., Economizer, Down, Pred Part # S1-02925417000 $618.67 View & buy → Temperature Sensor, 3 Lead Part # S1-03101946000 $265.97 View & buy → Block, Terminal, 2 Pole, 250V, 20A Part # S1-02530887000 $16.38 View & buy → Temperature Sensor, 10 ft Lead, Female, with Clip Part # S1-02549697000 $45.70 View & buy → Temperature Sensor, -40 to 110C, Female, without Clip Part # S1-02550564000 $26.32 View & buy → Rod, Damper, 5/16 Dia. x 5-11/16 Long Part # S1-02638011000 $69.47 View & buy → Arm, Control Part # S1-02638540000 $50.14 View & buy → Gear, Actuator, Damper Blades, 7 Teeth Part # S1-02646759000 $46.78 View & buy → Rack, Gear, Damper, 22.50 Inch Part # S1-02647194000 $329.57 View & buy → Return Air Damper Part # S1-02925416000 $675.54 View & buy → Sensor, Smoke Detector W/O Harness Part # S1-02543284000 $461.51 View & buy →

Air filters

Air Filter, Pleated, 16 x 24 x 2 Part # S1-02646333000 $43.37 View & buy → Air Filter, Cleanable, 22 x 30.25 x 1 Part # S1-02638061000 $51.05 View & buy → Duct Temperature Sensor Part # S1-03101120000 $1,171.55 View & buy →

Hardware & fittings

Clamp, Mounting, Coil, 18MM, 4IN Part # S1-02135518000 $34.55 View & buy → Arm, Motor Mount, Swept Wing Fan Part # S1-02645717000 $30.09 View & buy → Plate, Balance, SS 4 Tube 3-5T 15K Part # S1-02645735004 $364.05 View & buy → Sheave, Fixed 1 Groove, 1" Bore, AK56 Part # S1-02812363700 $137.94 View & buy → Belt Drive, A47, PL=48.3 Part # S1-02812366700 $42.12 View & buy → Sheave, Variable 1 Groove, 0.875" Bore, 1VL40 Part # S1-02812385700 $42.58 View & buy → Grommet, Piping, 5/8-1, 3/8-1, Predator Part # S1-02817278000 $32.56 View & buy → Grommet, Piping, 5/8-1, 7/8-1, Predator Part # S1-02817282000 $32.56 View & buy → Collector Box Gasket, 4-TUBE Part # S1-02818584000 $22.89 View & buy → Keystock, 1/4 x 1/4 x 1-1/4 Part # S1-02924409000 $44.87 View & buy → Shaft, Blower, 1.00 Dia. x 16.38 Long Part # S1-02925436000 $194.04 View & buy → Mount, Motor Part # S1-07326806000 $210.05 View & buy → Plate, Belt Adjust Part # S1-07327144000 $78.39 View & buy → Blockoff, Filter, Cab, Short, 15.88L Part # S1-07331233000 $71.24 View & buy → Shield, Belt, Blower, Predator, Short Part # S1-07344654000 $97.74 View & buy → Plate, Cutoff, Blower, 12 x 9 Part # S1-07344659000 $30.46 View & buy → Bracket, Mount, Motor, Blower Part # S1-07344660000 $177.59 View & buy → Plate, Fill, Blower, Predator Part # S1-07344661000 $81.47 View & buy → Wall, Filter/Control, Service, 42" Cabinet Part # S1-37326718000 $418.40 View & buy → Door, Access, Filter/Control Part # S1-37326720000 $255.10 View & buy → Door, Blower Access Part # S1-37326721000 $274.21 View & buy → Belt, V A45, PL=46.3 Part # S1-02816443000 $64.89 View & buy → Variable Sheave, 1GRV, 0.875" Bore, 1VP34 Part # S1-02817123000 $171.75 View & buy → Guard Fan, 24 Inch, Black Part # S1-02635511124 $303.02 View & buy → Roof, Condenser, Single, Drop in Orifice Part # S1-07328341000 $511.84 View & buy → Orifice Fan, 24" Nom Fan Dia., Drop in Part # S1-07328342000 $248.57 View & buy → Panel, Coil Mounting, Duct Side, 36 Long Part # S1-07344637000 $91.39 View & buy → Baffle, MC Coil, 28.00 Tall Part # S1-07344652000 $150.32 View & buy → Baffle, Condenser, 28 Inch Microchannel Coil Part # S1-37338773000 $303.91 View & buy → Sheave, Variable 1 Groove, 0.875" Bore, 1VL44 Part # S1-02804764700 $68.97 View & buy → Sheave, Fixed 1 Groove, 1" Bore, AK54 Part # S1-02812384700 $46.96 View & buy → Belt, V A46, PL=47.3 Part # S1-02816442000 $67.71 View & buy → Guard Coil, 34.5 x 47.75, Black Part # S1-02639504000 $366.03 View & buy → Guard Coil, Formed, 34.5 x 27, Black Part # S1-02639505000 $386.68 View & buy → Guard Coil, Formed, 34.5 x 27, Black Part # S1-02639506000 $461.50 View & buy → Hood Kit, Downflow, OA, Baro Relief, Shrt Part # S1-02648077000 $1,204.61 View & buy → Clamp, Thermistor, SS, 3/4 Inch Dia Part # S1-6043490 $15.08 View & buy → Conduit, Flex, Liquid Tight, 0.50 x 16 in Long Part # S1-02543286000 $34.31 View & buy → Connector, 1/2" Liquid Tight to 1/2" Emt Part # S1-02543287000 $32.05 View & buy → Sample Tube, Emt, Smoke Det, 21.68 Inch Part # S1-02645765000 $60.69 View & buy → Sample Tube, Emt, Smk Det, 12.00, Extension Part # S1-02645766000 $42.81 View & buy →

Other parts

Pipe, Vent Part # S1-02635595002 $402.19 View & buy → Muffler, Discharge Part # S1-02639507000 $37.39 View & buy →
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See all 12 York JA4ZJS05 model numbers

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

  • JA4ZJS05A4DZZ50001
  • JA4ZJS05B4BZZ50002
  • JA4ZJS05B4WZZ60001
  • JA4ZJS05E2DZZ60001
  • JA4ZJS05E4TZZ50001
  • JA4ZJS05H2AZZ60001
  • JA4ZJS05H5DZZ70001
  • JA4ZJS05J2AZZ70001
  • JA4ZJS05N4AZZ50001
  • JA4ZJS05P2DZZ50003
  • JA4ZJS05P4BZZ50003
  • JA4ZJS05P4TZZ60003

Similar York units: JA4ZHN05JA4ZJA05JA4ZJN05JA4ZRN05JA4ZHN06JA4ZJE06