If you’re working with heavy-duty engines, the right spacer plate is essential. The Caterpillar Stock Spacer Plate (part number J6I4421) fits perfectly between the engine block and cylinder head, ensuring your engine performs smoothly under pressure. Designed for Caterpillar models that endure constant strain, this Cat spacer plate keeps critical components in line, reducing the risk of wear, cracking, and helping to maintain proper head gasket sealing. Whether you’re maintaining machinery in Edmonton or anywhere else, this new spacer plate is built to keep your engine in top condition.
A spacer plate plays a critical role in maintaining the integrity of your engine. It sits between the cylinder head and engine block, and its job is to keep everything aligned and reduce stress on the liner flange while managing the distribution of pressure. Without the correct liner protrusion, the engine’s head gasket can fail, leading to leaks, cracks, or even total engine failure.
The spacer plate controls the thickness between the engine block and cylinder head, ensuring proper compression, alignment, and sealing. Designed to be only tiny fractions of an inch thinner than the liner flange, a high-quality plate keeps components sealed properly, maintaining a consistent compression ratio that allows your engine to operate efficiently. Without it, you’d see uneven wear, gaps in the seal, or even engine cracking due to pressure imbalances.
At BehindThe8, our engine spacer plates stand out because we build them to handle the stress heavy-duty machines face daily. Not all spacer plates are created equal—some may wear down quicker or fail to hold the standard size, which is why replacing worn or damaged ones is so important. When installed correctly, our plates will last longer and provide the protection your engine needs to stay at peak performance.
Here at BehindThe8, we get it. You don’t have time to waste when a machine’s down. That’s why, with over 25 years under our belt, we’ve made it our mission to supply high-quality, hard-to-find parts like engine block spacer plates—fast. From Caterpillar parts to other spacer plate needs, we know how vital it is to use the right part the first time. You get a team of experts who’ve spent their careers in diesel shops and out in the field, helping you make the best call for your repair.
Need support? We’re ready with answers. Our FAQs cover what you’ll need to know, and our customer service is just a call away. Plus, we deliver throughout Western Canada—so whether you’re fixing up cylinder heads in Edmonton or maintaining a construction fleet, we’ve got you covered. Don’t risk using just any part. With parts that perform and reasonable price points, you can trust BehindThe8 to get the job done right.
