KF6040-9 JAGUAR Litre Engine Block MK1

Review JAGUAR Original 1/2 Litre 55-59 Engine Block Oem Pn for MK1

The Jaguar KF6040-9 Mk1 engine block is a classic component of the Jaguar 1/2 litre XK engine series, specifically used in models from 1955 to 1959. This engine block is renowned for its sophisticated design, which was a significant step forward in Jaguar's engineering history.

The KF6040-9 Mk1 engine block is cast from high-quality iron, ensuring excellent durability and strength. Its cylinder bores measure 84.0 mm x 91.5 mm (3.31 inches x 3.56 inches), providing an engine capacity of approximately 1,489 cc (90.4 cubic inches). The engine block houses six cylinders arranged in a wet sump, inline configuration.

The block features a crossflow design, which significantly improved cooling efficiency by allowing coolant to flow through the cylinder heads before passing through the cylinder bores. This design also contributed to better scavenging and improved overall performance.

The KF6040-9 Mk1 engine block also includes integral oil ways to help distribute oil evenly throughout the engine. It is equipped with a crankshaft main bearing capacity of 22,215 Nm/m (2,415 psi) and a crankshaft counterweight capacity of 19,322 Nm/m (2,100 psi).

Additionally, this engine block is compatible with various Jaguar 1/2 litre XK engines, including those found in the Mk I, Mk VII, and Mk VIII models. It is essential to note that this engine block is intended for rebuilding or restoration purposes and requires professional installation and assembly.

In summary, the Jaguar KF6040-9 Mk1 engine block is an essential piece of automotive history, characterized by its robust construction, advanced design, and significant impact on Jaguar's engineering legacy. It is an ideal choice for Jaguar enthusiasts and restorers seeking to bring a classic 1/2 litre XK engine back to life.

Buying a Jaguar KF6040-9 Mk1 1/2 litre 55-59 engine block can be a significant investment for classic car enthusiasts or restorers. Here are some potential pros and cons to consider before making a purchase.

1. Authenticity: A genuine Jaguar engine block adds authenticity to your classic car, enhancing its value and appeal.

2. Performance: These engines are known for their smooth and powerful performance, making them a popular choice among Jaguar enthusiasts.

3. Availability: While not as common as some other engine blocks, these Jaguar engines are still relatively easy to find on the used market, making them a viable option.

1. Cost: Original Jaguar engine blocks can be expensive, especially if they are in good condition or require extensive restoration.

2. Complexity: These engines are complex machines with many moving parts, which can make repairs and maintenance time-consuming and costly.

3. Availability of Spares: Finding original spare parts for these engines can be challenging and expensive, which may limit the engine's long-term usability.

Buying a Jaguar KF6040-9 Mk1 1/2 litre 55-59 engine block can be a worthwhile investment for those who value authenticity and performance in their classic Jaguar. However, the cost and complexity of these engines should be carefully considered, and potential buyers should be prepared for the ongoing maintenance and repair costs that come with owning one.

If you are in the market for a Jaguar engine block and are considering the KF6040-9 Mk1 1/2 litre 55-59, I would recommend doing thorough research on the engine's condition, availability of spare parts, and potential repair costs before making a purchase. It may also be worth exploring alternative options, such as rebuilt or aftermarket engines, which can offer similar performance at a lower cost. Ultimately, the decision to buy a Jaguar engine block should be based on your personal preferences, budget, and long-term goals for your classic Jaguar.

Details:

For sale is this original Jaguar MK1 3 1/2 litre 55-59 engine block oem pn KF6040-9. Please review all the pictures for overall condition and ask any questions prior to purchase. Have a wonderful day!, id: 11348. Oem original.

Review the pictures, read , and make sure that this is right part for your vehicle.

specifications engineblocksam:

• for models: Mk1
• brand: Jaguar
• mpn: Kf6040-9
• type: Engine Block
• vintage part: Yes
• country of origin: United Kingdom
• performance part: No

payments engineblocksam:

• credit card: visa
• other
• wallet: google-pay

general engineblocksam:

• category: Auto Parts > Car Truck Accessories > Engines > Blocks

shipping engineblocksam:

seller engineblocksam:

• city: snohomish, washington
• rating: 99.4%
• # reviews: 9400

returns engineblocksam:

• time: 30 days
• policy: returns accepted
• paid by: seller

offer engineblocksam:

• price: $599.99
• item condition: Used
• options: ship-to-home
• in stock #: 1
• best offers: true
• sold #: 14
• started: october 22, 2025
• availability: in stock