Cat 3126 Oil Cooler Torque Specs

The oil cooler for a Cat 3126 engine should be torqued to the specifications outlined in the service manual. Generally, when installing an oil cooler it is important to use a new gasket and torque all bolts evenly in stages. The first stage of tightening should be done with 25 ft-lbs of torque followed by a second stage of 30 ft-lbs.

It is important to ensure that all bolts are tightened correctly or else there may be leakage around the seal which can lead to major damage on your engine. Additionally, make sure you have used anti-seize on any threads that come into contact with aluminum parts as this will help prevent galling and stripping of threads over time. Following these instructions will ensure proper installation and performance from your Cat 3126 oil cooler for years to come!

Maintaining your Cat 3126 engine is essential to keeping it in peak condition. One of the most important aspects of maintenance involves ensuring that all fasteners are properly tightened according to their torque specifications, including those on the oil cooler. The proper torque specs for the Cat 3126 oil cooler bolts are 14 Nm (11 ft-lb) and should be checked regularly as part of a routine engine maintenance schedule.

3126 CAT oil cooler

How Many Quarts of Oil Does a 3126 Cat Take?

The Caterpillar 3126 is an engine used in many heavy-duty applications, such as buses and large trucks. The engine requires a certain amount of oil to keep it running efficiently, so it’s important to know how much oil the 3126 needs. Depending on the model year of your Caterpillar 3126 engine, you will need either 15 or 16 quarts of oil.

This can be divided into two separate types: 10 quarts for the main crankcase and 6 or 5 respectively for each side valve cover. Always make sure that you use high quality lubricants specifically designed for diesel engines when refilling with oil. It’s also important to regularly check your oil levels and top off if necessary as overfilling can cause damage due to pressurization within the system.

Taking these steps will help ensure that your Caterpillar 3126 keeps running smoothly and reliably!

What is the Bore Size of a 3126 Cat?

The bore size of a 3126 Cat engine varies depending on the model. Generally, most models have a cylinder bore of 4.02 inches (102 mm) and a stroke length of 5.20 inches (132 mm). This results in an overall displacement of 7.2 liters or 441 cubic inches for this particular engine series.

As such, this makes it one of the larger engines offered by Caterpillar as far as displacement is concerned. The 3126 Cat was also manufactured with several different horsepower ratings, ranging from 175 to 425 HP at 2200 RPM and 480 to 550HP at 2100 RPM respectively – though these numbers may vary slightly depending on the specific model being used.

How Much Oil Does a 3126 Marine Take?

A 3126 Marine engine typically takes between 12 and 16 quarts of oil. This figure can vary depending on the type of motor you have, as well as its size. Generally speaking, larger motors like those found in marine applications require more oil than smaller engines due to their increased power output.

It’s important to check your manufacturer’s specifications for exact figures in order to ensure that you are adding the correct amount of oil when servicing or replacing it. Failure to do so could result in serious engine damage over time if too little is added or an increase in fuel consumption and emissions if too much is added. Additionally, be sure to use only the recommended grade of oil for your particular engine model; using a different grade may cause issues with lubrication and operation which could lead to costly repairs down the line.

Cat 3126 Oil Cooler Torque Specs



Overall, the Cat 3126 oil cooler torque specs are an important aspect of oil cooler maintenance. It is crucial to adhere to these specifications to ensure that your engine runs efficiently and safely. By understanding and following the proper Cat 3126 oil cooler torque specs, you can avoid costly repairs or damage down the line.

Ultimately, with a bit of time and effort invested in researching and adhering to these torque specifications, you’ll have peace of mind knowing that your engine will continue running smoothly for years to come.


  • Zayn

    John Zayn Smith is a renowned truck enthusiast, automotive industry expert, and author. Beginning his career as a mechanic, Zayn's curiosity led him to explore all facets of the trucking world, sharing his insights through in-depth articles on His knowledge spans truck mechanics, trends, and aftermarket modifications, making him a trusted resource for both professionals and hobbyists. Outside writing and mechanics, Zayn enjoys off-roading, truck shows, and family time. Follow his work for the latest in truck-related news and tips.

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