1515911 Manifold for CAT 1SK, 4KG 3126 MARINE ENGINE, 1ZJ & more

  • New Manifold Replacement suitable for Caterpillar Equipment
  • Made to USA Specification

Buy with Confidence: All parts are covered by our warranty

$2,604.08

4.7

(Site rating)
In Stock | Ships Out Today | Order By 3pm ET
SKU
1515911CTP
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Description for 1515911 Manifold

This aftermarket Caterpillar 1515911 Manifold is built to meet U.S. OEM specifications for durability and performance. At Propel Parts, we perform strict quality checks to ensure it fits and functions like your original Caterpillar Manifold.
Direct Replacement: Engineered for a precise fit in Caterpillar equipment.
OEM-Spec Quality: Manufactured to match the performance of your original part.
Tested Reliability: Strict quality checks are performed before shipping.

Specification for 1515911 Manifold

Replacement Part Number(s): 151-5911
Specifications: Aftermarket Part | US OEM Specs.
Shipping: Same Day (Weekdays) | Order by 3pm.
Warranty: Unlimited Mileage | 1 Year Warranty.
Core: No Core Required | No Core Charge.
Weight: 57.80 LBS | 26.22 KG
Dimensions: 39.76 x 9.06 x 5.51 (inches)
Condition: New

Exact Fit Guarantee for 1515911 Manifold

Looking for a reliable replacement Caterpillar 1515911 Manifold ? Order with confidence through our Exact Fit Guarantee.
Verified Fit: Before we ship, we check your part against CAT SIS (Caterpillar Service Information System) to confirm it's the correct match for your machine.
Peace of Mind: If it isn't the right fit, we'll contact you with the correct Caterpillar part number before your order goes out.
Exclusive Guarantee: Enroll in our Exact Fit Guarantee at checkout to ensure you get the part you need the first time.
More Information
Models 3116 MARINE ENGINE, 1SK, 4KG 3126 MARINE ENGINE, 1ZJ, 4EZ, 6MK, 6SR, 8NM, NSW
Dimensions 39.76x9.06x5.51
Customer Reviews
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    Very helpful. Every question or request I had was answered quickly. I didn't have a parts book for my excavator but that was no problem for them. If you need parts for your Cat, give them a shot.
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    The customer care response was very awesome. It was more than what I expected
    The customer care response was very effective and timely
    The response time was amazing
    The availability of most of the parts that I wanted was also very awesome
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Frequently Asked Questions

Product

What is the function of the 1515911 manifold for CAT marine engines?

The 1515911 manifold is designed to efficiently direct exhaust gases away from the engine cylinders in CAT marine engines such as the 3126 series. This ensures proper engine breathing, helps maintain optimal combustion performance, and supports overall engine efficiency and longevity.

Which engines are compatible with the 1515911 manifold?

This manifold is commonly used with CAT 3126 marine engines, including 1SK and 1ZJ engine configurations, as well as other compatible models. Fitment may vary depending on your specific engine setup.

Check your manual or reach out to Propel Parts for help verifying fitment.

Does the 1515911 manifold meet OEM performance standards?

Yes, this manifold is engineered to meet OEM specifications, ensuring reliable performance, durability, and proper exhaust flow. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to maintain optimal engine operation.

How do I install the 1515911 manifold?

To install the manifold correctly, follow these general steps:

  • Turn off the engine and allow it to cool completely
  • Remove the existing manifold and associated components carefully
  • Clean the mounting surface to ensure a proper seal
  • Position the new manifold and secure it according to torque specifications
  • Reassemble components and start the engine to check for leaks

For best results, always refer to your engine service manual for detailed instructions.

What are the signs of a failing or damaged exhaust manifold?

A faulty manifold may show the following symptoms:

  • Reduced engine performance or power loss
  • Unusual engine noise or exhaust leaks
  • Increased exhaust temperature
  • Visible cracks or corrosion on the manifold

Addressing these issues early can help prevent more serious engine damage.

How often should a marine engine manifold be replaced?

There is no fixed replacement interval for manifolds, as lifespan depends on operating conditions, maintenance practices, and environmental exposure. Regular inspections are recommended, especially in marine environments where corrosion can occur more quickly.

Why is a high-quality manifold important for marine engine performance?

A properly functioning manifold ensures efficient exhaust flow, which is critical for maintaining engine power, fuel efficiency, and temperature control. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to ensure long-term reliability and performance.

Can I use an aftermarket 1515911 manifold for my CAT engine?

Yes, premium aftermarket options are a reliable choice when they are designed to meet or exceed OEM expectations. We offer high-quality aftermarket manifolds that deliver dependable performance and durability, making them a practical alternative for maintaining your engine.

Questions About this Part?
Have a question about fit, compatibility, shipping, warranty, or returns?

This 1515911 Manifold is compatible with the following models:
3116 MARINE ENGINE, 1SK, 4KG 3126 MARINE ENGINE, 1ZJ, 4EZ, 6MK, 6SR, 8NM, NSW & more...

Shipping

We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.

We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.

Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.

Easy Returns

Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.

Warranty

Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.