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Caterpillar 3520, 3508, 3512, 3516 Fuel Injector : OEM 20R1277

CATERPILLAR 3520, 3508, 3512, 3516 FUEL INJECTOR : OEM 20R1277

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$850.00

CORE CHARGE:

$500.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITY IN STOCK
OEM NUMBER20R1277
PART TYPEFuel Injector
BRANDTamerx Diesel Products
ENGINE MAKECaterpillar
ENGINE TYPE3520
YEAR
PART NUMBER20R1277

PRODUCT DESCRIPTION

This is a New, Tamerx Fuel Injector, Tamerx part number 20R1277 ( OEM Part Number 20R1277 ). This part is primarily made for a Caterpillar 3520, 3508, 3512, 3516, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM20R1277
Additional OEM0206, 20R0849, 20R1262, 20R1269, 20R1270, 20R1275, 20R1277, 392, 392-0205, 392-0226

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode086547491914
WEIGHT6.00 LBS

SHIPPING OPTIONS

Ship Weight : 6.00 LBS
UPS Ground, 2nd Day Air, Next Day Air

SHIPPING POLICY

Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.

The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.

Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.

Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".

If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.

As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.

What is a Core Charge?

A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.

30 Day Core Charge Hold

You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.

The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.

The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more. You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation. Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.

All fluids must be drained.

If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.

Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.


Designed for Caterpillar 3520, 3508, 3512, and 3516 engine models, the Fuel Injector (OEM 20R1277) delivers controlled fuel delivery to support consistent combustion across heavy-duty diesel applications. This injector is engineered for precision, helping maintain steady engine operation under demanding load conditions. Built to OEM standards, it integrates seamlessly with existing fuel systems and is a direct-fit replacement for compatible Cat engines. The injector body is constructed to handle high-pressure fuel environments and extended service intervals common in industrial and power generation settings. Ideal for addressing injector wear, flow inconsistencies, or as part of a scheduled maintenance program.

PEOPLE ALSO ASKS | BLOG(S)

Fuel injectors are key components that ensure the efficient operation of engines by delivering the right amount of fuel to the combustion chamber. The Caterpillar 3520, 3508, 3512, 3516 Fuel Injector, OEM 20R1277, is designed to maintain optimal engine performance for these Caterpillar models. In this blog, we’ll focus on the functions of this fuel injector and its role in keeping your engine running smoothly.

Key Functions of the Caterpillar Fuel Injector OEM 20R1277

  • Precise Fuel Delivery
    • The OEM 20R1277 injector ensures that fuel is accurately delivered to each cylinder, allowing for efficient combustion and power output.
  • Fuel Atomization
    • It breaks the fuel into fine particles, creating a proper air-fuel mixture that results in a complete burn, maximizing engine efficiency.
  • Improved Fuel Economy
    •  By providing accurate fuel injection, the injector helps optimize fuel consumption, reducing overall fuel usage.
  • Reduces Emissions
    • Proper fuel atomization lowers the amount of unburned fuel in the exhaust, minimizing harmful emissions and keeping the engine compliant with environmental standards.
  • Smooth Engine Operation
    •  A well-functioning injector prevents engine issues such as rough idling, misfires, or loss of power by ensuring consistent fuel flow.

Maintenance Tips for the Caterpillar Fuel Injector OEM 20R1277

  • Use High-Quality Diesel Fuel
    • Using clean, high-quality fuel helps prevent clogging and extends the life of the injectors.
  • Regular Inspections
    •  Periodically check the injectors for signs of wear, leaks, or damage to detect potential problems early.
  • Injector Cleaning
    • Use fuel system cleaners to remove carbon buildup, ensuring optimal fuel flow and injector performance.
  • Replace When Necessary
    •  If symptoms like decreased fuel efficiency or engine power arise, replacing the injectors with the OEM 20R1277 can restore proper engine function.

The Caterpillar 3520, 3508, 3512, 3516 Fuel Injector OEM 20R1277 is essential for maintaining fuel efficiency, reducing emissions, and ensuring smooth engine operation. Regular maintenance and timely replacement of fuel injectors are crucial for keeping your engine performing at its best. TamerX Diesel Parts offers high-quality OEM injectors to support the longevity and efficiency of your Caterpillar engine.

Fuel injectors are vital components in your vehicle's fuel system, responsible for delivering the right amount of fuel to the engine for efficient combustion. If a fuel injector goes bad and isn't replaced, it can lead to a variety of engine problems that worsen over time. Understanding the potential consequences of not replacing a faulty fuel injector can help you maintain your vehicle's performance and avoid costly repairs.

  • Engine Misfires

    • A bad fuel injector can cause inconsistent fuel delivery, leading to engine misfires. Misfires result in rough idling, poor acceleration, and an overall decrease in engine performance. Persistent misfires can cause damage to other engine components.

  • Decreased Fuel Efficiency

    •  When a fuel injector is malfunctioning, it can either deliver too much or too little fuel, resulting in poor fuel economy. Over time, this increased fuel consumption can become costly.

  • Increased Emissions

    •  A failing fuel injector can cause an imbalance in the air-fuel ratio, leading to incomplete combustion. This results in higher emissions, which can cause your vehicle to fail an emissions test and contribute to environmental pollution.

  • Potential Engine Damage

    • Excess fuel can enter the engine's cylinders if a fuel injector is leaking, washing away the necessary lubrication. This can cause increased friction, leading to premature wear on pistons, cylinders, and other internal components, potentially resulting in severe engine damage.

  • Check Engine Light Activation

    • A malfunctioning fuel injector may trigger the check engine light, indicating issues with the fuel system. Ignoring this warning can lead to further complications if the faulty injector is not replaced.

  • Unstable Engine Performance

    • A bad fuel injector can cause irregular engine behavior, such as sudden power loss, hesitation, or difficulty starting. These issues can make driving unpredictable and unsafe.

  • Damage to the Catalytic Converter

    •  If unburnt fuel from a leaking injector reaches the exhaust system, it can damage the catalytic converter. This can result in costly repairs or even the need to replace the converter entirely.

Not replacing a bad fuel injector can lead to various problems, from engine misfires and poor fuel efficiency to more severe engine damage and increased emissions. Addressing the issue promptly can save you from costly repairs down the road and ensure your vehicle continues to run smoothly. Regular maintenance and timely replacement of faulty components are key to keeping your engine in top condition and extending its lifespan.

Issues include hard starts, misfires, excess smoke, unbalanced cylinder contribution, or high fuel consumption.

Common causes include fuel contamination, prolonged high-load operation, excessive heat, or mechanical wear.

Yes, improper seating, incorrect torque, or a missed trim code can result in hard starts or misfires.

Yes, a faulty injector can cause cylinder imbalance, engine knock, or shutdown protocols.

Caterpillar Fuel Injectors

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