SUMO II 1.3 liter 8 valve "Long Block" ON SALE!

Regular price $1,698.00

Shipping calculated at checkout.

This is our Top of the line "High Performance Engine" with a SUMO II head. No One Builds a better Quality or More Powerful Engine! THIS ENGINE WILL GIVE YOU BETTER GAS MILEAGE THAN YOUR OLD WORN OUT ENGINE, IT IS GREAT ON OR OFF ROAD! WITH OUR HIGH POWER LOW END CAM, IT PRODUCES WAY MORE TORQUE & ALL AROUND HORSE POWER, YET IT WILL STILL REV HIGHER THAN MOST OTHER LARGER ENGINES. This engine works with or with out EFI and passes all smog test.


The SUMO II engine also allows your Samurai to run at lower rpm's in higher gears....this is great for driving on road in hills and into high wind. You will now have "Passing Power" something unheard of in a Zuk!!! New timing belt, & a New Oil Pump and New Water Pump are supplied along with all the engine gaskets required to install your engine. Bored .040 over with flat top pistons. We also include break-in information, along with tuning & timing information. As a few people have found out the hard way "even the factory service manual is wrong on several things" So~ we provide the correct info with all our engines! . Your core must be useable and you pay return shipping on your good core. No core..... no warranty  Core MUST be returned within 30 days after you receive your engine from us. disclamer: please allow 10 business days for processing.




All products carry our 12 Month Limited Warranty. All warranties are limited to the original purchaser and are not transferable to subsequent owners of the product. The warranty period begins on the purchase date. Rock Crawler Parts LLC warrants that it will repair or replace, free of charge, any eligible product which, under normal conditions of use and service, proves to be defective in materials or workmanship. This warranty does not cover any labor costs incurred in diagnosis of defects, removal or reinstallation of a product, nor does it cover any other consequential expenses.



Warranty Exclusions

AZ Rock Crawler Parts LLC  warranty does not cover, and AZ Rock Crawler Parts LLC  shall not be liable for, any undertaking, representation, or agreements made by dealers or other third parties selling Rock Crawler Parts LLC  products, except where such agreements are within the provisions of this Warranty.

Specifically excluded from this warranty are failures caused by lack of maintenance, misuse, negligence, modification, abuse, improper application, crash damage, installation or operation, or failures caused by unauthorized service or use of unauthorized parts.

Additionally excluded from this warranty are parts which are subject to normal wear and tear, such as bushings, fluids, hoses, gaskets, belts, etc. Products not manufactured by AZ Rock Crawler Parts LLC  Inc. are excluded from any warranty and shall be handled with the original manufacturer.

All parts used in a competitive racing environment are excluded from this warranty. If, after inspection, a part returned, under any warranty, is deemed to be ineligible for warranty repair or replacement, the part may be repaired or replaced for a discounted cost. Return shipping charges will apply. Any part for which a warranty replacement is sought must be returned to Rock Crawler Parts LLC  before any replacement items can be shipped. All replacement parts shipped before the suspect part has been received and evaluated by  AZ Rock Crawler Parts LLC , MUST BE PAID IN FULL. In such a case, after the suspect part has been received and approved for a warranty replacement, the purchase price for the replacement will be refunded.


      To begin your warranty claim:
    • Please contact AZ Rock Crawler Parts LLC . at 623-258-5910 or email prior to returning any product under warranty to verify that warranty is still in effect.
    • Products must be shipped back to AZ Rock Crawler Parts LLC . at the expense of the customer.
      Ship all products to:
      AZ Rock Crawler Parts LLC
      1701 S. 177th Av
      Goodyear,AZ 85338
    • Please place a clearly marked copy of the original invoice inside the package.
    • Please include a short note stating the problem you are experiencing.


If any of the above mentioned policy is not met, the package will be refused or warranty claim denied. By completing the steps above, this will ensure faster processing of your claim so that AZ Rock Crawler Parts LLC  can get your product back to you as quickly as possible. All warranties are generally processed within 2-3 business days of Trail-Gear receiving the parts from you. Additional delays may be incurred if product needs additional testing or repairing.

If you are an international customer, please email the warranty department at to receive further instruction. International customers may have the option to field destroy an approved warranty to avoid costly return shipping. In this case, any shipping charges for replacement parts will be at the expense of the customer.

2-4 Week Lead Time.