Best Short Engine Blocks of 2025

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Short engine blocks are a vital component in the automotive industry. These blocks are a shortened version of the traditional engine block, making them ideal for use in smaller vehicles or applications where space is limited. Short engine blocks are designed to provide the same level of performance as their larger counterparts, but with a reduced size and weight. They are available in various sizes and configurations to suit different needs and are made from high-quality materials that ensure durability and longevity. Short engine blocks are a popular choice among car enthusiasts and mechanics alike, as they offer a cost-effective solution without compromising on performance.
At a Glance: Our Top Picks
Top 10 Short Engine Blocks
SBT Short Block Engine for SeaDoo
The SBT Short Block Engine is an all-in-one solution designed for your SeaDoo supercharged models up to 2005. This pre-assembled lower unit comes ready to install, allowing you to quickly attach your head and other external parts without hassle. It also includes essential head and valve cover gaskets, ensuring a proper seal and optimal performance. Additionally, a new rocker arm shaft is included, providing further reliability and efficiency in operation. This engine block simplifies your installation process, making it easier for you to get back on the water faster.
SBT Short Block Engine for SeaDoo 4-Tec
The SBT Short Block Engine is a fully assembled lower unit designed for easy installation on SeaDoo 4-Tec supercharged models from 2006 to 2016, excluding the 300hp variant. It comes with head and valve cover gaskets, ensuring you have everything you need for a seamless setup. Since it's an assembled unit, you can quickly bolt on your head and external components, saving you time and effort. This convenience allows you to get your SeaDoo back on the water faster, making it an excellent choice for users looking for reliability and ease of use.
Subaru Short Block Engine 10103AC890
The Subaru Short Engine Blocks, model 10103AC890, come with a Gasket & Seal Kit. This kit ensures proper sealing, preventing leaks and maintaining engine performance. The Subaru brand guarantees quality and reliability. Short Engine Blocks offer a compact design for easy installation and maintenance. With this product, you can trust in Subaru's expertise and enjoy a hassle-free engine experience.
SoloSwap™ LS Mock Up Engine Block
The SoloSwap™ LS Engine Block is designed for effortless installation with all LS engine components, making it easy for you to position or create engine mounts. Weighing just 18 pounds for the short block, it allows you to lift it in and out of your vehicle without needing an engine hoist. This mock-up engine accurately represents the sizes of Gen 3 and Gen 4 LS blocks, accommodating various LS engine types. Built from heavy-duty steel, it promises durability that outlasts foam alternatives, ensuring you have a reliable tool for your engine swap projects.
Subaru STi Short Block Engine
Subaru STi Short Block is a 2.5L short engine block designed for 04-07 STi models. This engine block is loaded with features that make it a great choice for your car. Firstly, it is made by the well-known brand Subaru, which is known for producing high-quality auto parts. Secondly, the short block design makes it easier to install, saving you time and effort. Thirdly, the 2.5L engine provides more power and torque, giving your car better acceleration and performance. Finally, the loaded block includes all the necessary components, making it a convenient and hassle-free solution for engine replacement. With these features, Subaru STi Short Block can enhance your car's performance and provide a smooth driving experience.
Subaru EJ253 Short Block Engine
The Subaru Short Block Engine is a genuine part designed specifically for your vehicle, ensuring the perfect fit and functionality. This short block engine is manufactured to meet high standards, providing reliability and performance. By using this OEM part, you can enjoy peace of mind knowing that it aligns with the specifications of your Subaru. The part number 10103AB820 makes it easy to identify and order, simplifying the replacement process for you. With this engine, you can enhance your vehicle's performance and longevity, ensuring a smoother driving experience.
Subaru Short Block Engine
This genuine Subaru Short Block Engine is designed to fit your specific vehicle, ensuring it meets the manufacturer's specifications for fit, form, and function. The part number for this short block engine is 10103AC880, and it falls under the category of Short Engine Blocks.
Mopar Short Block for Chrysler PT Cruiser
The Mopar Short Block Engine is a genuine part designed specifically for your Chrysler PT Cruiser or Dodge Neon. This high-quality short block ensures a perfect fit and optimal performance, helping you maintain your vehicle’s efficiency. Its manufacturing meets strict specifications for form and function, giving you peace of mind that you're getting a reliable product. By choosing this engine block, you can expect improved durability and longevity, making it a smart investment for your car’s maintenance needs.
Subaru Short Block Engine 10103AB660
The Subaru Short Block Engine 10103AB660 is a reliable choice for your vehicle's engine needs. As a genuine part from Subaru, you can trust its quality and performance. This short block engine is designed to offer durability and efficiency, ensuring that your car runs smoothly for years to come. By opting for this product, you benefit from an easy installation process, making it a convenient solution for your engine replacement. Whether you're a DIY enthusiast or a professional mechanic, this short block engine simplifies your repair work while maintaining the integrity of your vehicle.
Generic Subaru EJ257 Engine Block
This Generic Subaru Engine Block is a genuine Japanese part designed specifically for the EJ257 2.5L Impreza WRX STI. It's essential to confirm that this part is compatible with your vehicle before purchasing, as doing so ensures that you receive the correct fit for your engine. By matching the part number or providing your VIN, you can avoid any installation issues. This level of attention to detail helps you maintain your vehicle's performance and reliability, making your repair or upgrade process smooth and hassle-free.
Frequently Asked Questions (FAQs)
1. Are short blocks better?
Short blocks can offer better performance than long blocks, especially when using high-quality parts and accessories. One advantage of a short block is that it does not come with a preinstalled cylinder head, allowing you to choose and optimize the cylinder head assembly for improved horsepower output.
2. How much does a short block cost?
The cost of a short block assembly can vary depending on the specific engine and car. On average, short blocks start around $1,000-3,000. However, prices can fluctuate based on factors such as brand, quality, and additional features or modifications.
3. Is it cheaper to rebuild or replace an engine?
Rebuilding an engine can be a more cost-effective option compared to replacing it with a new one. Repowering an engine through a rebuild typically costs only 10% to 20% of the price of a new vehicle. Additionally, opting to keep and repair an older vehicle can also lead to lower annual insurance costs compared to insuring a new vehicle.
During our short engine block research, we found 24 short engine block products and shortlisted 10 quality products. We collected and analyzed 2,197 customer reviews through our big data system to write the short engine blocks list. We found that most customers choose short engine blocks with an average price of $1,635.88.
The short engine blocks are available for purchase. We have researched hundreds of brands and picked the top brands of short engine blocks, including SBT, Subaru, Speedway Motors, Mopar. The seller of top 1 product has received honest feedback from 95 consumers with an average rating of 4.8.

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.