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  See more parts for Nissan Altima
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Darton MID Block Sleeve Kit Nissan QR25DE Applications - 800-240
Many production cast iron and aluminum blocks suffer from a design weakness of cylinder stability by nature of poor support at the upper deck area. The manufacturing process of "cast in sleeves" provides for economy of scale in low horsepower engines, but does not accommodate high horsepower, high boost, or larger bore sizes. Darton has engineered a superior patented solution by using a unique designed cylinder sleeve which when siamesed and nested, creates a solid deck of sleeve flanges held in tension, reinforcing the upper deck area and provides for individual replacement with what they call Modular Integrated Deck (MID).

In addition, Darton designs manage and enhance water flow from block to head to promote stability of cooling and all sleeves are of the "Wet" design. The enhanced water flow in and around the flange area is possible because of ported water flow control engineering Darton calls "Swirl Coolant Technology". Heat is also dissipated through the use of "Register Fins". While heat is generally considered to translate into energy, high resident heat in the combustion chamber can lead to detonation, the single highest cause of engine failure in the high horsepower regimes.

Darton supplies the MID sleeves with a phosphate coating. Phosphate coating is the treatment with a solution whereby the surface of the metal is covered with an integral, protective layer of insoluble crystalline. This microcrystalline structure on the MID sleeve makes it optimal for corrosion and rust resistance. Additionally this adds another protective barrier for the o-rings in the lower register of the sleeve extending their lifespan even longer.

Darton MID Key Benefits:
  • Cast iron performance in an aluminum block
  • Improved block integral strength
  • Improved cooling
  • "Wet sleeve" replace-ability
  • Increased horsepower output potential
  • Superior oil and compression control
  • Superior cylinder sealing and ring wear
  • Street or strip application
  • Bulletproof Darton ductile iron
  • 130,000-psi tensile strength
Specifications:
  • Bore: 3.490in
  • Outer Diameter: 3.950in
  • Wall Thickness: 0.230in
  • OAL: 5.925in
  • Flange Thickness: 0.400in
  • Flange Diameter: 4.950in
  • Application: 89mm to 90mm MAx
Fitment:
  • Nissan Altima (QR25DE) 2.5L 02-06
  • Nissan Altima (QR25DE) 2.5L 07-12
  • Nissan Altima (QR25DE) 2.5L 13-14
  • Nissan Frontier (QR25DE) 2.5L 05-13
  • Nissan Rogue (QR25DE) 2.5L 08-13
  • Nissan Sentra SE-R (QR25DE) 2.5L Including Spec-V 02-06
  • Nissan Sentra SE-R (QR25DE) 2.5L Including Spec-V 07-12
Notes:
  • Darton QR25DE cylinder sleeves will also fit most non-USA market Nissan QR25DE engines. Please call for details.
Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle Make/Model
Nissan Altima 2002-2014 S
Nissan Altima 2002-2004, 2006-2014 Base
Nissan Altima 2002-2009 SE
Nissan Altima 2002-2014 SL
Nissan Altima 2005-2006 SE-R
Nissan Altima 2007-2011 Hybrid
Nissan Altima 2008-2009 Coupe
Nissan Altima 2010-2012 SR
Nissan Altima 2013-2014 Exclusive
Nissan Altima 2013-2014 Advance
Nissan Altima 2013-2014 SV
Nissan Altima 2013-2014 Sense
Nissan Frontier 2005-2013 LE
Nissan Frontier 2005-2008 Nismo Off-Road
Nissan Frontier 2005-2013 XE
Nissan Frontier 2005-2010 SE
Nissan Frontier 2009-2013 PRO-4X
Nissan Frontier 2011-2013 S
Nissan Frontier 2011-2013 SV
Nissan Frontier 2011-2013 SL
Nissan Frontier 2013 Desert Runner
Nissan Rogue 2008-2013 S
Nissan Rogue 2008-2013 SL
Nissan Rogue 2010 Krom
Nissan Rogue 2011 S Krom
Nissan Rogue 2011-2013 SV
Nissan Rogue 2012-2013 Exclusive
Nissan Rogue 2012-2013 Advance
Nissan Rogue 2012-2013 Sense
Nissan Sentra 2002-2006 GXE
Nissan Sentra 2002 CA
Nissan Sentra 2002-2012 SE-R Spec V
Nissan Sentra 2002-2006 XE
Nissan Sentra 2002-2012 SE-R
Nissan Sentra 2002-2006 GXE Sport
Nissan Sentra 2003 Limited Edition
Nissan Sentra 2003-2004 LE
Nissan Sentra 2004-2012 S
Nissan Sentra 2004-2012 Base
Nissan Sentra 2006 XE SE
Nissan Sentra 2006 XE SE Edicion Especial
Nissan Sentra 2007-2012 Emotion
Nissan Sentra 2007-2010 Premium
Nissan Sentra 2007-2012 SL
Nissan Sentra 2007-2012 Custom
Nissan Sentra 2008-2010 Luxury
Nissan Sentra 2009-2012 SR
Nissan Sentra 2011-2012 Elite

Darton Sleeves Logo

The Story of Darton Sleeves

Darton Sleeves was incorporated in 1978 with the goal of becoming a premier manufacturer of automotive speed parts. In pursuit of this objective, the founders established manufacturing relationships with several unique European factories that specialized in products and techniques that would appeal to Darton’s potential customers. Later in 1990, Darton became part of an international company based out of Portugal. That company was Pachancho, a 100-year-old manufacturing firm located in picturesque northern Portugal that leads a group of companies that specialize in automotive parts like cylinder sleeves, piston rings, iron castings, and specialty aluminum castings.

The Darton affiliate company is world-renowned and a major supplier to the automotive industry in Europe. All the material for Darton's cylinder sleeves is produced in the Portugal workshop, which is recognized worldwide for excellence in all forms of unique types of centrifugally cast ductile and grey iron. The focus of Darton International’s business, to this day, is the production and delivery of cylinder sleeves (also called cylinder liners).

Where is Darton Sleeves Today?

Today, Darton Sleeves continues to advance in the performance racing industry market. It is widely recognized as a leader in the engine sleeve arena, staying in the lead technologically thanks to its ability to solve problems associated with the increased power demands made by pro racers and enthusiasts alike. What’s more, Darton Sleeves is also the main sleeve supplier for the Ford SVO aluminum engine program.

Darton Sleeves is constantly evaluating current engine designs from the OEM market as a way of anticipating the needs of petrolheads and to stay ahead of the curve. The company employs a market strategy aimed at being the primary sleeve supplier of choice for small engine shops and OEMs too. To reach this goal, Darton is always hard at work researching and utilizing its state-of-the-art manufacturing technology to continually market new products such as its latest invention: the “modular integrated deck sleeve” kits. From simple cost-effective sleeve replacements to high-tech modified solutions, Darton Sleeves has what you need.

Get Darton Sleeves at Vivid Racing

Vivid Racing carries a wide array of piston sleeves from Darton Sleeves for a number of different vehicles, including cars, trucks, and SUVs. If you have any questions regarding the products listed above or about Darton Sleeves, please do not hesitate to call our expert sales team at (480) 966-3040. 

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