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Kubota KX040-4 Excavator

The Kubota KX040-4 is a excavator powered by a Cummins/Onan B48G engine.

1
Cylinders
120
Parts

Engine

Cummins/Onan B48G
Cylinders1

Parts

120
Part #DescriptionQtySystem
102-1200Gasket, Oil Base1Gasket Amazon eBay
110-1807Gasket, Intake Valve Guide1Gasket Amazon eBay
110-1879Seal, Valve - Intake (Optional)2Seal Amazon eBay
110-1921Gasket, Valve Cover1Gasket Amazon eBay
110-2287Gasket, Head - All Except Key 31Gasket Amazon eBay
110-2368Gasket, Cylinder Head (Optional Graphoil)2Gasket Amazon eBay
110-3181Gasket Kit, Carbon Removal2Gasket Amazon eBay
110-3213Gasket Kit, Complete (Graphoil Head Gasket)1Gasket Amazon eBay
110-3214Gasket Kit, Complete (Standard Head Gasket)1Gasket Amazon eBay
110-3604Seal, Intake Valve2Seal Amazon eBay $31.95
120-0161Gasket Kit, Oil Pump1Gasket Amazon eBay $10.95
120-0491Pump, Oil1Pump Amazon eBay $30.00
120-0713Cup, Intake - Oil Pump1Pump Amazon eBay
122-0320Adapter, Oil Filter1Oil filter Amazon Amazon eBay eBay
122-0321Gasket, Oil Filter Adapter1Gasket Amazon eBay
122-0360Drain, Oil Filter (Unpainted/Painted)1Oil filter Amazon eBay
122-0375Gasket, Oil Filter Adapter1Gasket Amazon eBay
122-0438Cover, Oil Filter Pad - Optional1Gasket Amazon eBay
122-0645Filter, Oil1Oil filter Amazon eBay $11.99 NAPA $9.09
123-1429Carburetor, Complete (See Separate Group for Components) (Includes Mounting Gasket)1Gasket Amazon eBay
123-1611Drain, Oil Filter1Oil filter Amazon eBay
140-1228Element, Air Cleaner (Paper)1Air filter Amazon eBay NAPA $25.20 KuduParts $11.00
140-1496Air Cleaner Element Wrapper1Air filter Amazon eBay NAPA $5.66
140-1663Cover, Air Cleaner1Air filter Amazon eBay $110.33
140-1885Housing, Air Cleaner Element1Air filter Amazon eBay
145-0438Gasket, Mounting - Carburetor1Gasket Amazon eBay
145-0521Tube, Air Intake1Hose Amazon eBay
146-0311Gasket, Carburetor to Adapter2Gasket Amazon eBay
146-0384Gasket, Adapter to Manifold3Gasket Amazon eBay
150-2091Filter, Breather Tube1Air filter Amazon eBay
154-0733Gasket, Carburetor To Adapter1Gasket Amazon eBay $50.00
160-1150Gasket, Breaker Box Mounting1Gasket Amazon eBay
167-0263Spark Plugs2Spark plug Amazon eBay $19.00
167-0291Begin Spec P2Spark plug Amazon eBay
167-1602Cable, Spark Plug2Spark plug Amazon eBay $53.93
168-0187Gasket Kit AJ (Batt Chg)1Gasket Amazon eBay
168-0189Kit, Gasket2Gasket Amazon eBay
191-1532Motor, Starter (Complete) - Begin Spec C variant1Starter Amazon eBay
191-1534Housing, Starter Motor variant1Starter Amazon eBay
191-1567Motor, Starter (Complete) alternate variant1Starter Amazon eBay FridayParts $132.50
191-2255Motor, Starter (Complete)1Starter Amazon eBay FridayParts $175.79
312-0255Capacitor, Ignition Coil Attached to Air Cleaner Support3Air filter Amazon eBay
509-0065Seal, "O" Ring1Seal Amazon eBay
509-01420-Ring1Seal Amazon eBay $19.99
509-0145Seal, O-Ring1Seal Amazon eBay
517-0048Gasket, Base - Oil1Gasket Amazon eBay
517-0120Seal, Valve - Intake (Optional)1Seal Amazon eBay
526-0063Gasket (Fuel Tank)1Gasket Amazon eBay
800-0023Gasket, Manifold to Block1Gasket Amazon eBay
800-0033Support, Air Cleaner Specs B and C + Begin Spec D2Air filter Amazon eBay
101-0432Insert, Valve Seat - Exhaust Standard1Service part / kit Amazon eBay NAPA $10.89
101-0432-02.002" Undersize1Service part / kit Amazon eBay
101-0432-10010" Undersize1Service part / kit Amazon eBay
101-0432-20.020"Undersize1Service part / kit Amazon eBay
101-0432-30030" Undersize1Service part / kit Amazon eBay
102-1220Base, Oil (Includes Parts Marked *)1Service part / kit Amazon eBay
104-0032Gear, Crankshaft1Service part / kit Amazon eBay NAPA $260.36
104-0043Washer,Gear1Service part / kit Amazon eBay
104-0170Screw1Service part / kit Amazon eBay
104-0776*Shim, Crankshaft (.005”)1Service part / kit Amazon eBay
104-0779Gear, Ring Flywheel (Includes Ring Gear Crankshaft)1Service part / kit Amazon eBay
104-1351Splined, 13 Tooth1Service part / kit Amazon eBay
104-1364Crankshaft Related Parts17Service part / kit Amazon eBay
104-14431.125" Diameter Stub x 3" Long - Tapered1Service part / kit Amazon eBay
104-15751.437" Diameter Stub x 3.06" Long - No Taper1Service part / kit Amazon eBay
104-17001.125" Diameter Stub x 2.32" Long - No Taper1Service part / kit Amazon eBay KuduParts $608.00 FridayParts $628.60
105-0332Gear1Service part / kit Amazon eBay NAPA $63.43
105-0402Nub, Governor Cup1Service part / kit Amazon eBay FridayParts $18.99
105-0541Washer, Thrust1Service part / kit Amazon eBay
110-0006BPlug, Welch (1-5/8") Crankshaft Opening1Service part / kit Amazon eBay
110-0539Spring, Valve4Service part / kit Amazon eBay NAPA $320.92
110-0639Lock, Valve Spring8Service part / kit Amazon eBay $60.00 NAPA $77.40
110-0893110-3s55-05 110-3655-?015Service part / kit Amazon eBay
110-0904Rotocap, Exhaust2Service part / kit Amazon eBay NAPA $116.06 FridayParts $124.86
110-1955Valve, Exhaust - All Except Key 32Service part / kit Amazon eBay
110-2274Cover, Valve - LH3Service part / kit Amazon eBay
112-0186Piston (includes pin and retaining rings) - Standard2Service part / kit Amazon eBay $35.00
112-0186-05Piston and Pin .005" Oversize2Service part / kit Amazon eBay
112-0186-10Piston and Pin .010" Oversize2Service part / kit Amazon eBay
112-0186-20Piston and Pin .020" Oversize2Service part / kit Amazon eBay
112-0186-30Piston and Pin .030" Oversize2Service part / kit Amazon eBay
112-0186-40Piston and Pin .040" Oversize2Service part / kit Amazon eBay
112-0229Pin, Piston2Service part / kit Amazon eBay
113-0189Ring, Retaining - Piston (Standard .005" .010" .020" .030" .040" Oversize)2Service part / kit Amazon eBay $49.99
113-0189-05Ring Set, Piston .005" Oversize4Service part / kit Amazon eBay
113-0189-10Ring Set, Piston .010" Oversize4Service part / kit Amazon eBay $74.95
113-0189-20Ring Set, Piston .020" Oversize4Service part / kit Amazon eBay
113-0189-30Ring Set, Piston .030" Oversize4Service part / kit Amazon eBay
113-0189-40Ring Set, Piston .040" Oversize4Service part / kit Amazon eBay
114-0240Rod, Connecting (Standard .010" .020" .030" Undersize)4Service part / kit Amazon eBay
114-0257Ring Set, Piston (Standard .010" .020" .030" Undersize)2Service part / kit Amazon eBay
114-0257-10Rod, Connecting .010" Undersize2Service part / kit Amazon eBay
114-0257-20Rod, Connecting .020" Undersize2Service part / kit Amazon eBay
114-0257-30Rod, Connecting .030" Undersize2Service part / kit Amazon eBay
115-0006Valve, Breather4Service part / kit Amazon eBay NAPA $672.72
115-0006-02.002 Oversize4Service part / kit Amazon eBay
115-0006-05.005 Oversize4Service part / kit Amazon eBay
120-0140Spring, Bypass Valve1Service part / kit Amazon eBay FridayParts $1096.58 SinoCMP $9999.00
120-0398Plunger, Bypass Valve1Service part / kit Amazon eBay
123-1173Guide, Valve Intake - Begin Spec D1Service part / kit Amazon eBay
123-1174Spring, Breather Valve1Service part / kit Amazon eBay
123-1175Reed, Breather Valve1Service part / kit Amazon eBay
123-1402Cap and Indicator, Oil Fill1Service part / kit Amazon eBay
123-1417Filter, Breather Tube1Service part / kit Amazon eBay
123-1612Bracket, Fill Tube - Begin Spec C2Service part / kit Amazon eBay
134-3847Venturi, Blower Wheel1Service part / kit Amazon eBay
134-3864Baffle, Oil Base Air1Service part / kit Amazon eBay
134-4120Guard, Flywheel1Service part / kit Amazon eBay
134-4641Crankshaft (Includes Parts Marked *) .986" Diameter Stub x .84" Long - No Taper1Service part / kit Amazon eBay
140-1661Dashpot - Begin Spec F1Service part / kit Amazon eBay
140-1827Self-Lock, Specs B and C1Service part / kit Amazon eBay
140-1961Flanged, Begin Spec D1Service part / kit Amazon eBay
146-0381Adapter, Carburetor2Service part / kit Amazon eBay
146-0430Manifold, Intake1Service part / kit Amazon eBay
150-0075Pin, Camshaft Center1Service part / kit Amazon eBay
150-0078Ring, Camshaft Center Pin1Service part / kit Amazon eBay
150-1214Spring, Governor1Service part / kit Amazon eBay
150-1345Arm, Governor Control Use with Swivel1Service part / kit Amazon eBay
150-1398Spring, Idle Setting1Service part / kit Amazon eBay
150-1519Hub, Governor Cup1Service part / kit Amazon eBay

Service & wear parts shared with every machine that uses this engine. Confirm the exact part for your serial number.

Aftermarket parts that fit this excavator

60
15531-64601 FridayParts $23.61 15221-43081 Amazon eBay $37.58 KuduParts $13.00 FridayParts $15.69 RHF3 FridayParts $50.30 SinoCMP $269.00 1G934-17012 FridayParts $229.99 1G934-17011 FridayParts $229.99 1A021-63820 FridayParts $115.00 TD03-07B FridayParts $179.00 TD03-7G FridayParts $194.00 1G622-17013 FridayParts $194.00 68658-14430 KuduParts $184.00 FridayParts $188.50 68651-14430 KuduParts $184.00 FridayParts $188.50 RD118-14433 KuduParts $184.00 FridayParts $188.50 RD148-14430 KuduParts $184.00 FridayParts $188.50 RD411-51352 FridayParts $39.50 RD411-51353 FridayParts $29.90 SinoCMP $48.00 60mm FridayParts $12.94 108mm FridayParts $811.56 R141164930 KuduParts $20.00 FridayParts $21.59 RD158-42270 FridayParts $28.00 RD158-42280 FridayParts $22.91 HH164-32430 Amazon Amazon eBay $28.99 eBay $28.99 FridayParts $23.20 KuduParts $133.00 RD411-62210 FridayParts $36.32 KuduParts $56.00 RD159-51020 FridayParts $122.00 1J801-53052 SinoCMP $149.00 FridayParts $168.00 0445110777 FridayParts $168.00 RD411-62150 FridayParts $9.50 RD461-62120 FridayParts $39.99 1J801-50500 FridayParts $816.64 L4802 FridayParts $8.95 RD159-51022 KuduParts $33.00 FridayParts $35.00 RD138-53513 FridayParts $83.99 PSVL-42-E FridayParts $3090.99 B0610-42013 FridayParts $3090.99 B0610-42017 FridayParts $3090.99 B0610-42018 FridayParts $3090.99 1J801-50540 FridayParts $78.50 33770-96290 FridayParts $54.99 16483-74110 FridayParts $57.30 Thermo-0 FridayParts $62.75 1J500-18500 FridayParts $62.75 1J500-18511 FridayParts $132.58 1J801-18521 FridayParts $249.58 36919-53342 KuduParts $56.00 FridayParts $58.59 36919-53340 KuduParts $56.00 FridayParts $58.59 1G772-37012 FridayParts $180.00 RD451-93730 FridayParts $221.99 RD451-47650 FridayParts $305.99 1J801-52030 FridayParts $139.99 RD451-46190 FridayParts $108.99 RD158-21302 FridayParts $478.43 RD118-21300 FridayParts $478.43 RD148-21300 FridayParts $478.43 RC411-17103 FridayParts $1705.09 RC411-17102 FridayParts $1844.99 RD15951940 KuduParts $56.00 FridayParts $58.56 RC411-21503 FridayParts $388.99 KuduParts $546.00 RC411-21606 KuduParts $404.00 FridayParts $423.66 RD568-42300 FridayParts $369.94 RD411-53470 FridayParts $66.94 KX030 FridayParts $66.94

Parts listed by aftermarket suppliers as fitting this excavator — leads compiled from supplier catalogs; verify the exact part for your serial number.

Available documents

Reference

Common questions

Which engine powers the Kubota KX040-4?

The Kubota KX040-4 excavator is powered by the Cummins/Onan B48G engine.

About

Kubota KX040-4 — excavator. Specifications and parts compiled from manufacturer documents.

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Service & wear parts for the Kubota KX040-4.

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