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Mack AC380, AC410 Fuel Injector 2000-2006: OEM 736GB421M2X ( Set of 6 )

MACK AC380, AC410 FUEL INJECTOR 2000-2006: OEM 736GB421M2X ( SET OF 6 )

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$2,094.00

CORE CHARGE:

$1,500.00
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 NUMBER736GB421M2X
PART TYPEFuel Injector
BRANDTamerx Diesel Products
ENGINE MAKEMack
ENGINE TYPEAC380, AC410
YEAR2000-2006
PART NUMBER736GB421M-RM-SET

PRODUCT DESCRIPTION

This is a Remanufactured, Tamerx Fuel Injector, Tamerx part number 736GB421M-RM-SET ( OEM Part Number 736GB421M2X ).This part is primarily made for a Mack AC380, AC410, production years 2000-2006, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM736GB421M2X
Additional OEM736GB421M2X

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode
WEIGHT12.00 LBS

SHIPPING OPTIONS

Ship Weight : 12.00 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.


Built for Mack AC380 and AC410 engines manufactured between 2000 and 2006, the OEM 736GB421M2X fuel injector set delivers consistent fuel flow and dependable operation. This set includes six injectors designed to align with factory specifications, supporting accurate combustion and steady engine cycles. Each injector is individually tested to ensure it meets the demands of daily operation in commercial diesel applications. Whether you're managing routine upkeep or addressing a service requirement, these injectors offer a direct fit solution without unnecessary complications. Their ready-to-install format helps streamline maintenance while maintaining engine reliability over time.

FITMENT CHART

YEARMAKEENGINE(S)
2000Mack AC380 AC410
2001Mack AC380 AC410
2002Mack AC380 AC410
2003Mack AC380 AC410
2004Mack AC380 AC410
2005Mack AC380 AC410
2006Mack AC380 AC410

PEOPLE ALSO ASKS | BLOG(S)

Fuel injectors play a vital role in the efficient operation of Mack AC380 and AC410 engines. The OEM 736GB421M2X fuel injector set is designed specifically for models from 2000 to 2006, ensuring compatibility and optimal fuel delivery. Understanding the components of these injectors can help identify potential issues and maintain reliable engine function.

Key Components of the Fuel Injector:

  • Injector Body
    • Houses the internal mechanisms and ensures precise fuel flow into the combustion chamber.
  • Nozzle
    • The tip of the injector that sprays fuel in a fine mist for efficient combustion.
  • Solenoid Valve
    • Regulates the timing and amount of fuel delivered.
  • Fuel Inlet
    • Connects the injector to the fuel supply line.
  • Seal Rings
    • Prevent fuel leaks and maintain pressure.
  • Spring and Plunger Assembly
    • Facilitates the movement of fuel from the inlet to the nozzle under controlled pressure.

These parts work together to deliver accurate fuel quantities at the right time for efficient engine operation.

A fuel injector that gets stuck open can lead to significant engine issues if not addressed quickly. The fuel injector’s role is to deliver precise amounts of fuel into the engine for optimal combustion. When it remains stuck open, it releases too much fuel, disrupting this balance and causing several problems.

Common Problems of a Stuck Open Fuel Injector

If a fuel injector gets stuck open, you may notice:

  • Fuel smell
    • Excess fuel can create a noticeable smell in the cabin or near the vehicle.
  • Poor fuel efficiency
    • The engine consumes more fuel than necessary, leading to frequent refueling.
  • Rough idling
    • Too much fuel can cause the engine to idle unevenly or stall.
  • Black smoke from the exhaust
    • The excess fuel burns incompletely, producing black smoke.
  • Engine misfires
    • Overfueling can prevent proper ignition in one or more cylinders.

Driving with a stuck-open injector can damage the engine over time, as excessive fuel can wash away vital lubrication from cylinder walls. It’s essential to diagnose and fix the issue promptly to avoid costly repairs.

When properly installed and maintained, these OEM injectors can deliver reliable operation for many thousands of engine hours.

Standard diesel service tools are generally sufficient, but proper torque and alignment are essential for installation.

Symptoms such as rough idle, hard starts, fuel smell, or excess smoke may point to worn or faulty injectors.

These OEM injectors deliver a precise multi-hole spray pattern for accurate diesel fuel atomization.

Mack Fuel Injectors