1976-05 Mercury 20" Lower Unit 135 150 175 200 HP 1.78 Ratio V6 1 YEAR WTY!

 
$950.00
International Shipping Quote
  • Brand: Mercury
  • Size: 135 150 175 200 HP
  • Color: Grey
  • Style: 1.75:1 Ratio - 8/15 splines - V6
  • Condition: Seller Refurbished
  • Notes: Opened, Inspected & Tested!
  • SKU: 36151 LRU
  • Manufacturer Part Number: N/A
  • Country of Manufacture: United States
  • Motor & Engine Type: Mercury
  • Part Type: Motors, Engines & Components
  • Other Part Number: N/A
  • Surface Finish: Painted, Grey
  • Warranty: 30 days
  • Inventory Number: 36151 LRU
  • Website Category: Lower Units
  • Website Sub Category: Complete Lower Units
  • UPC: N/A
  • Shipping: $75.00
Part Number N/A
Additional Info This lower unit is in good freshwater condition and is ready for your engine. The paint does have some cosmetic flaws such as scuffs and scratches. There are not any cracks or breaks in the housing whatsoever. We even took the time to add on a new skeggard which is a $100 value itself. This does come not with the trim tab, the propeller, or the propeller hardware. The splines are in good condition and are not cracked or chipped. Please note that this does not come with the trim tab, propeller, or the propeller hardware. This has a 4-3/4" big bullet. We cannot ship lower units with oil in them so this must be done prior to installation. Given our unprecedented 1 year warranty on every lower unit, you will never find a better deal on an OEM lower unit.  Purchase with confidence!   

These 1.78 Ratio lower units were mostly used on late 80's Mercury 150 XR4's and Magnum units but with proper propping, they can be used on any of the applications in the title.

Driveshaft measures - 21-3/8" from top of water pump housing to top of driveshaft.
Driveshaft spline count - 8
Prop shaft spline count - 15

General Information

  • Freshwater condition
  • Opened & Inspected
  • Professionally Cleaned
  • New Impeller
  • Pressure checked to 12 PSI minimum
  • Fully Resealed
  • Shafts checked for straightness

Criteria to validate your 1 year warranty:

  • Core must be of equal or greater value
  • Cannot be locked up - driveshaft must spin
  • Up to 30 days from the date of purchase to send in your core
  • Covers mechanical aspects ONLY
  • Warranty begins from date of purchase

You will receive two copies of the terms and conditions for the lower unit one year warranty. One copy MUST be signed and returned with your core. Without a returned signed copy, the one year warranty will not be valid. 

Upon receipt of your core, we will inspect the unit to determine if it meets the criteria to validate the 1 year warranty. We reserve the right to accept or reject any core at our discretion. If you have any questions or concerns, please do not hesitate to contact us at 618-487-9499 and we would be happy to help!

Fits: 1976-2005 - 135 150 175 200 HP - 1.75:1 Gear Ratio

Mercury V6’s originally used a preload pin from 1976-1988. Aftermarket replacements and 1989 & up V6 lower units did not.  Therefore, if you have a V6 lower unit with a preload pin, it could only be used only from 1976-1988.  If you have a lower unit that does not have a preload pin, it can be used from 1976-2005.

We have provided this cross-reference with the resources we have available in regards to fitment. This most likely will not fit every model for the years and horsepowers we have listed. We urge you to make sure this is the exact item you need by matching the part number to what is required for your motor. If you need help doing so, please contact us prior to purchasing and we would be happy to help!








1976-05 Mercury 20" Lower Unit 135 150 175 200 HP 1.78 Ratio V6 1 YEAR WTY!
1976-05 Mercury 20" Lower Unit 135 150 175 200 HP 1.78 Ratio V6 1 YEAR WTY!1976-05 Mercury 20" Lower Unit 135 150 175 200 HP 1.78 Ratio V6 1 YEAR WTY!1976-05 Mercury 20" Lower Unit 135 150 175 200 HP 1.78 Ratio V6 1 YEAR WTY!1976-05 Mercury 20" Lower Unit 135 150 175 200 HP 1.78 Ratio V6 1 YEAR WTY!1976-05 Mercury 20" Lower Unit 135 150 175 200 HP 1.78 Ratio V6 1 YEAR WTY!1976-05 Mercury 20" Lower Unit 135 150 175 200 HP 1.78 Ratio V6 1 YEAR WTY!1976-05 Mercury 20" Lower Unit 135 150 175 200 HP 1.78 Ratio V6 1 YEAR WTY!