Product Function & Specs:

121-1022 is identified by Caterpillar as a 3A diode with a 600V peak inverse voltage rating. A diode allows electrical current to flow primarily in one direction and can be used in electrical protection and circuit-control applications.

• Component Type: Diode
• Forward Current: 3 A
• Peak Inverse Voltage: 600 V
• Length: 1.65 in
• Width: 0.74 in
• Height: 0.53 in

Confirm the circuit location, diode polarity, and electrical specifications against the original component and applicable wiring diagram before installation.

Failure Symptoms:

• Electrical circuit does not operate correctly
• Repeated fuse failure or abnormal electrical protection activity
• Visible diode damage, overheating, or wiring-related faults

Quick Installation Notes:

• Confirm the machine number, circuit location, diode rating, and polarity before replacement.
• Disconnect the relevant electrical power supply and inspect the wiring and connectors.
• Install the diode in the correct orientation according to the wiring diagram and test the circuit afterward.

Maintenance Tips:

• Inspect wiring, connectors, and electrical terminals for corrosion or damage.
• Check for recurring circuit faults before replacing the diode repeatedly.
• Protect electrical components from moisture, contamination, and loose connections.

FAQ:

Q: What is Caterpillar 121-1022?

A: 121-1022 is a Caterpillar 3A diode with a 600V peak inverse voltage rating.

Q: What are the electrical specifications?

A: The listed specifications are 3A forward current and 600V peak inverse voltage.

Q: Which Caterpillar machines use this diode?

A: Caterpillar lists the diode across selected excavators, material handlers, mobile hydraulic power units, and other equipment. Confirm the machine number and electrical circuit before ordering.

Q: Is this an OEM or aftermarket replacement?

A: This product is supplied as a new aftermarket replacement. It is not represented as a genuine Caterpillar factory part.

Q: What should be checked before installation?

A: Check the diode rating, polarity, physical dimensions, wiring diagram, and original part identification. Follow the applicable Caterpillar electrical service procedure.

Why Sourcing From WinsParts?

WinsParts supports part-number and machine-configuration checks before quotation, helping parts dealers and repair workshops reduce ordering errors. Worldwide export and shipping coordination is available.

Product Function & Specs:

255-2966 is a Caterpillar air filter change indicator used to monitor air restriction in the air line between the air cleaner and turbocharger. The indicator helps identify when the air filter requires inspection or replacement.

• Type: Mechanical air filter change indicator
• Thread: 1/8-27 NPSF
• Pipe Connection: 1/8-27 NPT listed by Cat
• Lead Wires: 2
• Cover: Included in the Cat product description

Application coverage includes various Caterpillar excavators, mobile hydraulic power units, material handlers, compactors, and other equipment. Confirm the original component and machine configuration before ordering.

Failure Symptoms:

• Air filter restriction warning does not activate as expected
• Incorrect or inconsistent air filter restriction indication
• Damaged indicator housing, wiring, or threaded connection

Quick Installation Notes:

• Confirm the part number, thread specification, and connector or wire arrangement before removal.
• Clean the mounting area and prevent dirt from entering the air intake system.
• Install the indicator according to the applicable Caterpillar service procedure and check the warning function.

Maintenance Tips:

• Inspect the indicator and wiring during scheduled air intake system maintenance.
• Check the air filter and intake lines for excessive restriction, damage, or contamination.
• Replace damaged indicators and investigate abnormal restriction readings before continued operation.

FAQ:

Q: What is Caterpillar 255-2966?

A: 255-2966 is an air filter change indicator used to monitor air restriction in the air line between the air cleaner and turbocharger.

Q: What is the thread specification?

A: Cat lists a 1/8-27 NPSF thread, while the product title identifies a 1/8-27 NPT connection. Confirm the original connection specification before installation.

Q: Which Caterpillar machines use this part?

A: Listed applications include various 320D, 330D, 349D, 345C, and 336D models, along with other equipment. Compatibility should be confirmed using the machine serial number.

Q: Is this an OEM or aftermarket replacement?

A: This product is supplied as a new aftermarket replacement. It is not represented as a genuine Caterpillar factory part.

Q: What should be checked before installation?

A: Check the thread specification, wire arrangement, housing condition, and air intake connection. Follow the applicable service instructions for installation and function testing.

Why Sourcing From WinsParts?

WinsParts supports part-number and equipment-configuration checks before quotation, helping parts dealers and repair workshops reduce ordering errors. Worldwide export and shipping coordination is available.

Product Function & Specs:

The DENSO 294200-0670 suction control valve is used with common rail diesel fuel injection pumps. It regulates the fuel supplied to the high-pressure pump according to the fuel system control requirements. The part is associated with selected DENSO common rail pump families, including pump numbers in the 294050 series; confirm the exact pump configuration before replacement.

Failure Symptoms:

• Hard starting or unstable engine idle.
• Reduced engine power or delayed acceleration.
• Fuel pressure-related fault codes or irregular engine operation.

Quick Installation Notes:

• Clean the surrounding fuel-system area and keep all open ports protected from contamination.
• Confirm the valve part number, connector arrangement, and pump configuration before installation.
• Prime or bleed the fuel system according to the applicable service procedure, then inspect for leakage.

Maintenance Tips:

• Replace fuel filters at the recommended service interval.
• Use clean diesel fuel and prevent water or dirt from entering the fuel system.
• Inspect related fuel lines, connectors, and pump components when control-valve faults recur.

FAQ:

Q: Can this part replace OEM 294200-0670?

A: This product is offered as a new aftermarket replacement identified by DENSO part number 294200-0670. Confirm the original valve and pump numbers before ordering.

Q: Is this an OEM or aftermarket replacement?

A: The listed condition is New Aftermarket Replacement. Genuine DENSO supply status is not claimed.

Q: Which engines or machines are compatible?

A: Specific engine and machine compatibility is not fully verified. Confirm the common rail pump number, engine model, and machine serial number before purchase.

Q: What should be checked before installing the SCV?

A: Check the part number, pump configuration, connector arrangement, fuel cleanliness, and condition of the related fuel system.

Q: Can I purchase this part in bulk?

A: Yes. We support wholesale enquiries for parts dealers and repair workshops. Contact us for bulk pricing and shipping options.

Why Sourcing From WinsParts?

We support part-number checking before quotation and can review machine model and serial-number details to reduce ordering errors.

Product Function & Specs:

251-0580 is a Caterpillar console wiring harness used to route electrical power and signals between relevant console-mounted electrical circuits. Cat describes this harness as including terminals for connecting electronic pump control ground. The exact connector arrangement and circuit configuration should be verified against the applicable machine wiring diagram.

Failure Symptoms:

• Intermittent electrical operation or signal interruption
• Visible wire insulation, terminal, or connector damage
• Electrical faults associated with console-mounted circuits

Quick Installation Notes:

• Disconnect the applicable electrical power supply before beginning installation.
• Compare the harness routing, terminals, and connectors with the machine wiring diagram.
• Secure the harness correctly and check for interference, loose connections, or exposed wiring.

Maintenance Tips:

• Inspect wiring insulation and connectors for wear, corrosion, and physical damage.
• Keep harness routing clear of excessive heat, abrasion, and moving components.
• Investigate recurring electrical faults before replacing additional components.

FAQ:

Q: What is part number 251-0580?

A: It is a Caterpillar console wiring harness with terminals used for relevant electrical connections, including electronic pump control ground.

Q: Which Caterpillar machines are associated with this harness?

A: Cat lists applications including 320D, 330D, 345D, 349D, and 336D. Confirm the machine serial number and harness configuration before ordering.

Q: Is this an OEM or aftermarket replacement?

A: This page describes a new aftermarket replacement. Genuine OEM status has not been verified.

Q: Are the connector and terminal specifications confirmed?

A: The exact connector and terminal configuration has not been independently verified. Compare the replacement harness with the original part and applicable wiring diagram.

Q: Can I purchase this harness in bulk?

A: Yes. Contact WinsParts for wholesale enquiries and application verification.

Why Sourcing From WinsParts?

WinsParts supports part-number and application checking to help parts distributors and repair workshops reduce ordering errors.

Product Function & Specs:

09500-1211 is associated with a DENSO common rail fuel injector used in Komatsu fuel-system applications. The injector delivers metered fuel to the engine combustion system as part of the common rail injection system. Application references associate the injector with SAA6D125E and PC400-7 and PC450-7 applications.

Failure Symptoms:

• Hard starting or unstable engine idle
• Reduced engine power under load
• Excessive exhaust smoke or irregular injection

Quick Installation Notes:

• Clean the surrounding fuel-system area and keep all open ports protected from contamination.
• Verify the injector, connector, pipe, and sealing configuration before fitting.
• Prime the fuel system according to the applicable service procedure and check for leakage before operation.

Maintenance Tips:

• Replace fuel filters at the recommended service interval.
• Use clean fuel and prevent contamination during fuel-system servicing.
• Inspect related fuel lines, return connections, and seals when injector problems recur.

FAQ:

Q: Can this part replace OEM 09500-1211?

A: It is offered as a new aftermarket replacement for the supplied part-number reference. Confirm the exact injector number before ordering.

Q: Is this an OEM or aftermarket replacement?

A: It is a new aftermarket replacement intended for heavy machinery fuel-system service. Product configuration and application should be confirmed before installation.

Q: Which machines or engines are compatible?

A: Public references associate the corresponding DENSO 095000-1211 injector with Komatsu SAA6D125E applications including PC400-7 and PC450-7. Verify the machine and engine serial numbers before ordering.

Q: How can contamination be avoided during installation?

A: Clean the surrounding area, keep all fuel ports capped, use clean fuel, and follow the applicable fuel-system service procedure.

Q: Can I purchase this injector in bulk?

A: Yes. WinsParts supports wholesale enquiries for parts dealers, distributors, and repair workshops.

Why Sourcing From WinsParts?

We support part-number checking before quotation and can review machine model and serial-number details to reduce ordering errors.

Product Function & Specs:

The 238-2210 is a Caterpillar rocker switch assembly used for the lower windshield-washer function. Caterpillar identifies it as a 24 V sealed three-position rocker switch with a pigtail connector. The switch uses the windshield-washer symbol and has a 100 mm pigtail connector length.

Failure Symptoms:

• Lower windshield-washer function does not operate
• Intermittent switch operation
• Electrical response is absent when the rocker switch is operated

Quick Installation Notes:

• Switch off electrical power before removing the existing rocker switch.
• Inspect the connector, terminals, and panel cutout before installing the replacement switch.
• Connect the pigtail correctly and test the washer function after installation.

Maintenance Tips:

• Keep the switch and surrounding panel area clean and dry.
• Inspect the connector and wiring for looseness, corrosion, or damage.
• Check washer-switch operation during routine electrical-system inspection.

FAQ:

Q: What is Caterpillar 238-2210?

A: 238-2210 is a Caterpillar rocker switch assembly for the lower windshield-washer function.

Q: What voltage is the 238-2210 switch?

A: Caterpillar identifies the switch as a 24 V rocker switch.

Q: Which Caterpillar machines use 238-2210?

A: Caterpillar’s parts listing includes numerous applications, including 320D, 323D, 336D, 349D, 312D, 318E, and 345D. Confirm the machine configuration before ordering.

Q: What type of connector does this switch use?

A: Caterpillar specifies a sealed three-position rocker switch with a 100 mm pigtail connector.

Q: Is 238-2210 an OEM or aftermarket replacement?

A: The product offered by WinsParts is a new aftermarket replacement for Caterpillar part number 238-2210. Application should be verified before installation.

Why Sourcing From WinsParts?

WinsParts supports part-number and application verification before quotation, helping dealers and repair workshops confirm electrical components against the required Caterpillar machine configuration.

Product Function & Specs:

8-98027456-0 is identified in Isuzu parts references as a pressure sensor used in engine applications. The sensor is commonly identified as an engine oil pressure sensor and is associated with several Isuzu diesel engines, including 4HK1, 6HK1, 6WG1, and 4JJ1. Confirm the engine configuration and sensor application before installation.

Failure Symptoms:

• Intermittent or inaccurate oil-pressure signal.
• Warning indication associated with the engine oil-pressure circuit.
• Unstable electrical signal during engine operation.

Quick Installation Notes:

• Disconnect the electrical supply as required and clean the sensor area before removal.
• Inspect the connector and wiring, then confirm the replacement sensor configuration before fitting.
• Secure the sensor according to the applicable service procedure and check for correct signal operation after installation.

Maintenance Tips:

• Keep the sensor connector clean and protected from moisture and contamination.
• Inspect wiring and terminals for looseness, corrosion, or physical damage during service.
• Investigate repeated oil-pressure warnings before replacing the sensor again.

FAQ:

Q: Can this part replace Isuzu 8-98027456-0?

A: It is offered as an aftermarket replacement for the referenced Isuzu part number. Confirm the engine model and sensor application before ordering.

Q: Is this an OEM or aftermarket replacement?

A: It is a new aftermarket replacement intended for diesel engine service. Product configuration and application should be confirmed before ordering.

Q: Which Isuzu engines are compatible?

A: Available parts references associate the sensor with 4HK1, 6HK1, 6WG1, and 4JJ1 engines. Final application should be confirmed using the engine serial number.

Q: What should be checked before installing this pressure sensor?

A: Inspect the sensor connector, wiring, mounting area, and related oil-pressure circuit before installation. Follow the applicable engine service procedure for testing.

Q: Can I purchase in bulk?

A: Yes. We support wholesale orders for parts dealers and engine repair workshops. Contact us for bulk pricing and international shipping options.

Why Sourcing From WinsParts?

We support part-number checking before quotation and can review engine model and serial-number details to reduce ordering errors.

Product Function & Specs:

366-4622 is a Caterpillar Service Meter Kit used in Cat equipment and industrial engine applications. Cat identifies the kit as containing service meter 366-0367 and service meter film 114-2505. The published specifications list polycarbonate plastic material and overall dimensions of 1.6 inches high, 2.25 inches long, and 2.25 inches wide.

Failure Symptoms:

• Service meter display does not respond during equipment operation.
• Intermittent or unstable meter indication is observed.
• Physical damage or deterioration is visible on the meter assembly or film.

Quick Installation Notes:

• Disconnect electrical power and inspect the meter connector and related wiring before removal.
• Confirm the meter configuration, mounting position, and supplied components before installation.
• Reconnect the electrical system and verify the meter operation after fitting.

Maintenance Tips:

• Inspect the meter and electrical connections periodically for corrosion or physical damage.
• Keep the meter face and surrounding area clean during routine equipment service.
• Investigate repeated electrical faults before replacing the service meter again.

FAQ:

Q: Can this part replace OEM 366-4622?

A: It is offered as an aftermarket replacement for the referenced Caterpillar part number. Confirm the machine or engine serial number before ordering.

Q: Is this an OEM or aftermarket replacement?

A: It is a new aftermarket replacement intended for heavy machinery and industrial engine service. Product configuration and application should be confirmed before ordering.

Q: Which machines are compatible?

A: Cat lists 366-4622 for numerous applications, including 303.5E2, 308E, 312D, 320D, 330D, 349D, IT28, and 950F. Final fitment should be confirmed against the machine serial number.

Q: What is included in the 366-4622 Service Meter Kit?

A: Cat identifies service meter 366-0367 and service meter film 114-2505 as the two components included in the kit.

Q: Can I purchase in bulk?

A: Yes. We support wholesale orders for parts dealers and workshops. Contact us directly for bulk pricing and shipping options.

Why Sourcing From WinsParts?

Before quotation, we can compare the supplied part number with machine or engine information and flag details that require confirmation.