Cummins X15, ISB 6.7L Aftertreatment Device Gasket 2018-2026: OEM 5418557
CUMMINS X15, ISB 6.7L AFTERTREATMENT DEVICE GASKET 2018-2026: OEM 5418557
ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Genuine New, Cummins Aftertreatment Device Gasket, Cummins part number 5418557-OE ( OEM Part Number 5418557 ).This part is primarily made for a Cummins X15, ISB 6.7L, production years 2018-2026, and comes with a One Million Miles or One Year Warranty.
Additional Notes: Doser Injector Gasket heat shield
OEM NUMBERS
| Primary OEM | 5418557 |
| Additional OEM | 2126986, 2192544, 4387978, 5418557 |
ADDITIONAL DETAILS
| CONDITION | Genuine New |
| UPC / Barcode | 00840490558564 |
| WEIGHT | 1.00 LBS |
SHIPPING OPTIONS
Ship Weight : 1.00 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 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, 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 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.
"This Product Doesn't Have a Core"
Prevent exhaust leaks with this Cummins X15, ISB 6.7L Aftertreatment Device Gasket for 2018–2026 applications. OEM 5418557 provides a secure seal between aftertreatment components, helping prevent gas leaks and support proper emissions system operation. A reliable replacement for worn, damaged, or deteriorated gaskets in compatible Cummins X15 and ISB 6.7L engines.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2018 | Cummins | X15 | ISB 6.7L | |||
| 2019 | Cummins | X15 | ISB 6.7L | |||
| 2020 | Cummins | X15 | ISB 6.7L | |||
| 2021 | Cummins | X15 | ISB 6.7L | |||
| 2022 | Cummins | X15 | ISB 6.7L | |||
| 2023 | Cummins | X15 | ISB 6.7L | |||
| 2024 | Cummins | X15 | ISB 6.7L | |||
| 2025 | Cummins | X15 | ISB 6.7L | |||
| 2026 | Cummins | X15 | ISB 6.7L | |||
PEOPLE ALSO ASKS | BLOG(S)
Exhaust leaks around aftertreatment connections can allow hot gases to escape, create unusual noises, and interfere with proper exhaust routing. The Cummins X15, ISB 6.7L Aftertreatment Device Gasket 2018-2026: OEM 5418557 provides a sealing interface between compatible exhaust components, helping maintain a secure connection throughout normal diesel aftertreatment operation.
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OEM 5418557 is intended for compatible 2018-2026 Cummins X15 and ISB 6.7L diesel applications.
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Exhaust leak prevention helps contain hot exhaust gases within the intended aftertreatment pathway.
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Secure sealing interface fills minor surface irregularities between mating exhaust components when properly installed.
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Heat-resistant construction is suited for the elevated temperatures encountered within diesel exhaust systems.
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Compression-based sealing helps establish a tight connection when the gasket is installed with the correct fastening procedure.
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Application-specific shape and dimensions help align the gasket with compatible aftertreatment connection surfaces.
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Resistance to thermal cycling supports sealing during repeated heating and cooling of exhaust components.
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Reduced exhaust seepage helps limit unwanted gas escape, soot deposits, and unusual noises around gasket connections.
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Replacement-ready configuration provides a suitable option when the original gasket becomes compressed, deteriorated, or damaged during component removal.
The Cummins X15, ISB 6.7L Aftertreatment Device Gasket OEM 5418557 helps maintain a secure exhaust connection by sealing the mating surfaces of compatible aftertreatment components. Customers searching for a Cummins X15 aftertreatment gasket, Cummins ISB 6.7L exhaust gasket, diesel aftertreatment device gasket, exhaust sealing gasket, or OEM 5418557 replacement can find this application-specific component at TamerX Diesel Parts for compatible 2018-2026 applications.
Continuous exposure to high exhaust temperatures, pressure changes, and engine vibration can cause an Aftertreatment Device Gasket to deteriorate earlier than expected. Since this gasket helps maintain a secure seal between exhaust aftertreatment components, premature wear can lead to exhaust leaks, reduced sealing effectiveness, and emissions system problems.
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Excessive exhaust temperatures: Prolonged exposure to temperatures beyond the gasket's design limits can weaken its material and reduce sealing effectiveness.
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Repeated thermal cycling: Constant heating and cooling can cause expansion and contraction that gradually stresses the gasket.
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Improper installation: Incorrect positioning, uneven tightening, or failure to follow manufacturer torque specifications can damage the gasket or create an incomplete seal.
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Excessive engine vibration: Continuous vibration and movement can loosen connections and place additional stress on gasket sealing surfaces.
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Damaged mating surfaces: Warped, scratched, corroded, or uneven exhaust connections can prevent the gasket from sealing correctly.
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Exhaust system restrictions: Excessive backpressure caused by clogged aftertreatment components can increase stress on exhaust joints and contribute to leakage.
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Incorrect gasket selection: Using a gasket with incompatible dimensions, materials, or temperature ratings can result in premature deterioration.
Premature Aftertreatment Device Gasket failure can cause exhaust leaks, soot deposits around connections, and recurring aftertreatment problems. Inspecting mating surfaces, mounting hardware, exhaust temperatures, and gasket compatibility before replacement can help maintain a reliable seal and extend gasket service life.
Yes. A damaged or improperly seated gasket may allow exhaust gases to escape, producing hissing, ticking, or blowing noises around the connection. These sounds may become more noticeable when exhaust flow increases.
Technicians can inspect the gasket and surrounding connection for visible damage, soot deposits, uneven compression, or signs of exhaust leakage. Manufacturer-approved leak testing may help confirm a sealing problem that is not immediately visible.
Proper compression helps the gasket conform to the mating surfaces and maintain an effective exhaust seal. Insufficient or uneven compression may create gaps that allow hot exhaust gases to escape.
Yes. If the gasket fails to seal its connection, exhaust gases may escape into the surrounding area and create noticeable odors. Exhaust leaks should be repaired promptly because exposure to diesel exhaust can present health and safety risks.
Cummins Aftertreatment Device Gaskets
