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Engine - New Replacement Longblock Side Mount Turbo 6.5L Optimizer
Engine - New Replacement Longblock Side Mount Turbo 6.5L Optimizer

Engine - New Replacement Longblock Side Mount Turbo 6.5L Optimizer

Your Price: $7,556.75
Custom Drop Ship Delivery
  • Condition:New
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Payment Preference
Drop Ship or Local Stock
Engine Preparation
Shipping Crate Type
Metric Fastener Kit
Freight Delivery Option
New AM General - GEP Optimizer ™ 6.5L Diesel Engine - Side Mount Turbo Truck & Suv

This is the latest version of the 6.5L engine still produced new today. These are build-to-order engines in that your engine is run down the assembly line after order. Unfortunately, they are not built ahead of time and stored. Standard lead time to delivery is approximately 6-weeks, sometimes less depending on assembly plant's load.

This engine can replace virtually all 6.5L side-mount turbo applications used in 1992-2002 models ranging from trucks, Suburbans, Blazers, Tahoes and more.

Features & Included:

  • Engine Longblock Assembly (engine, timing cover, balancer, covers, pan, lift brackets, as pictured)
  • Block Heater (120 volt)
  • Oil Filter (filter and filter fitting)
  • Oil Pressure Sensor/Switch pre-installed
  • Filled with 15w40 Break-In Oil.
  • HD = Heavy Duty Emissions Rating
  • Diamond Pre-Combusion (largest) Cups for higher HP ratings
Engine features all metric fasteners, so if replacing a Pre-1999.5 model Engine. Select the Metric Fastener Kit that matches your application, only available for purchase with a long lock.

Payment and Shipping

This item is available for purchase via traditional payments only (no cards please). During checkout you'll be presented with an option to "Check / MO / ACH / Wire / CC" where you will have a blank to specify how you would like to manually pay, example Wire for Wire Payment. After checkout you will be emailed banking information for the Wire if that's what you selected. You will have 1 week to remit payment for Cash Value payment.

Select the shipping option that meets your need. Items with shipping amounts are for Continental USA shipments only. Flat rate shipping is provided as courtesy and we cannot provide alternative shipping estimates, please select an option provided. Shipments to Non-Continental USA States and International ship via Cargo or Air Freight. Shipping estimates for Air and Cargo can be provided prior to order, but please provide complete address an delivery type, we will use that estimate with your order invoiced separately.

Shipping will be performed in a secure shipping crate, exactly as pictured. Engine is safest shipping in this method!

Engine Preparation Options

If unit is being shipped via Air Freight the engine must be free of oil, new engines come with break-in oil in the pan, so engine must be un-crated and drained of oil and a new filter installed (that is dry). This requires being sent to Unique Diesel for processing making it not possible to drop-ship from factory, this is part of the cost associated with this option.

Addition of timing tab for mechanical engines. The factory cannot modify this assembly as it's intended for electronic engines. We can optionally add the mechanical timing tab to the front of the engine's timing cover with special tooling and have it match TDC for timing with timing lights, We do this and add the plug in the timing cover to delete the crank sensor opening. This makes the engine have to come to us instead of being able to drop-ship. This is part of the expenses figured into the cost of the option.


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