AMG GEP Marine Optimizer 6500 Long Block

Meet Quadstar's Marine Spec Optimizer 6500, the latest revision of the 6.5L diesel that is still in production today!  It features a 506 block design with piston squirters, like a GM casting, except it is cast with an improved metallurgy.  The heads have induction hardened seats and opened cooling passages between the valves to address all the issues GM engines traditionally had.

What's unique about this model?

• 18:1 Compression
• MLS Head Gasket Upgrade
• Cross compatible for marine 6.2 or 6.5 replacement and upgrade
• FORGED steel crankshaft, adopted from the P400 - STANDARD
• LATEST GEP head castings with improved cooling passages around the valves
  • Diamond, turbo style, pre-chambers
• Less lead time! 
  • We have local stock and rolling backorders to keep these moving out
  • Pickup from our main location in PA or the factory in Ohio can be arranged
• Easy payment options. Financing Available!
  
• We'll talk you though it. Please get in touch and we'll reach out.
  

No core or core fees required! These are 100% brand new direct from the USA AM General factory down to every single component and bolt.  Beware of imitations and misleading ads that abuse the trademark "Optimizer 6500".  

**Your payment method will be authorized when ordering but not be cleared immediately. We will contact you before clearing payment to ensure your order is correct and to review all applicable policies

AMG = AM General

GEP = General Engine Products. A subsidiary of AM General