Best Short Engine Blocks of 2025

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 2, 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

SBT Short Block Engine for SeaDoo Cover #TOP 1
SBT Short Block Engine for SeaDoo
ftb score rating icon 9.8
SBT Short Block Engine for SeaDoo 4-Tec Cover #TOP 2
SBT Short Block Engine for SeaDoo 4-Tec
ftb score rating icon 9.7
Subaru Short Block Engine 10103AC890 Cover #TOP 3
Subaru Short Block Engine 10103AC890
ftb score rating icon 9.5

Top 10 Short Engine Blocks

#TOP 1

SBT Short Block Engine for SeaDoo

SBT
24-113
SBT Short Block Engine for SeaDoo Cover
SBT Short Block Engine Compatible with SeaDoo Supercharged to 2005

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.

What We Like
Ready to install unit
Includes essential gaskets
New rocker arm shaft
Easy installation process
#TOP 2

SBT Short Block Engine for SeaDoo 4-Tec

SBT
24-113A
SBT Short Block Engine for SeaDoo 4-Tec Cover
SBT Short Block Engine Compatible with SeaDoo 4-Tec Supercharged 2006-2016 (all except 300hp)

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.

What We Like
Fully assembled for easy installation
Includes necessary gaskets
Time-saving setup
Compatible with various models
#TOP 3

Subaru Short Block Engine 10103AC890

10103AC890
Subaru Short Block Engine 10103AC890 Cover
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.

What We Like
Quality Gasket & Seal Kit
Reliable Subaru Brand
Compact Design for Easy Maintenance
#TOP 4

SoloSwap™ LS Mock Up Engine Block

91089660-SHORT
SoloSwap™ LS Mock Up Engine Block Cover
SoloSwap™ Chevy LS Mock Up Engine Swap Short-Block, No Head, Includes Hardware for Easy Assembly, 18 Pounds and Accepts Stock or Aftermarket LS Cylinder Heads

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.

What We Like
Easy installation
Lightweight design
Multiple applications
Durable construction
#TOP 5

Subaru STi Short Block Engine

10103AC030
Subaru STi Short Block Engine Cover
Subaru 10103AC030 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.

What We Like
Easy installation
High-quality brand
Improved performance
#TOP 6

Subaru EJ253 Short Block Engine

Subaru EJ253 Short Block Engine Cover
Genuine OEM SUBARU Legacy Forester Impreza SHORT BLOCK Engine EJ253 2006 up 2.5

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.

What We Like
Genuine Subaru quality
Perfect fit for vehicles
Reliable performance
Easy to identify part number
#TOP 7

Subaru Short Block Engine

10103AC0409Z
Subaru Short Block Engine Cover
Subaru Short Block Engine - 10103AC0409Z

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.

What We Like
Designed to fit your specific vehicle
Manufactured to meet specifications for fit, form, and function
Genuine Subaru part
#TOP 8

Mopar Short Block for Chrysler PT Cruiser

RL114430AD
Mopar Short Block for Chrysler PT Cruiser Cover
Mopar RL114430AD Engine Short Block Chrysler PT Cruiser Dodge Neon

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.

What We Like
Genuine Mopar quality
Perfect fit for specific vehicles
Durable and reliable performance
Manufactured to strict specifications
#TOP 9

Subaru Short Block Engine 10103AB660

10103AB660
Standard
Subaru Short Block Engine 10103AB660 Cover
Subaru 10103AB660 Short Block Engine

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.

What We Like
Genuine Subaru quality
Easy installation
Durable construction
Efficient performance
#TOP 10

Generic Subaru EJ257 Engine Block

Generic
32IN4V20V8I8JP
Generic Subaru EJ257 Engine Block Cover
Generic Genuine OEM For Subaru Engine Short Block Halves EJ257 2.5L Impreza WRX STI 11008AA930

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.

What We Like
Genuine Japanese part
Compatibility verification needed
Specific for WRX STI
Easy part number matching
Buying Guide Image

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.

Editor's Notes

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.

Written by
Robert Reyes Avatar

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.