Collapsible content


 warrants to the original purchaser
that each transmission shall be free of defects in materials and workmanship
for the term of 2 years 24,000 miles, and competition builds for the term of 1
year or 12,000 miles. Absolutely
No Warranty On Broken Shafts, Drums or Hard Parts, NO EXCEPTIONS!!

This warranty does not apply to or include any of the following:

OPERATOR ERROR. Includes racing,
competition pulling, dyno competitions, etc. These types of activities are
to be done at the operator's/owner's risk and the operator/owner assumes
all responsibility for damage that may occur.

. Wrong or inferior fluid type, inferior
filter (we strongly advise against using any quick lube shops for services
as fluid and filters are known to be of a lesser quality). Heat
is the #1 cause of transmission failure, this MUST BE MONITORED by the
person operating the vehicle. Normal operating temperature range should be
145-200 degrees with no more than 220 degrees ever being exceeded.

DAMAGE resulting from
failed u-joint, driveline damage or imbalance, transfer case failure or
damage, engine or transmission mount defects, failures, or misalignment,
broken case, pan, or extension housing due to off-road use (ie. becoming

REAPAIR OR REPLACEMENT required as a result
of any accident or misuse.

, including specifically but not limited to:
all components of the cooling system, hoses, thermal bypass units, and

not responsible for defective parts supplied by aftermarket companies that
may have been used in the build process such as (Servos, Valves, Clutches,
Torque Converters, Oil Pumps etc.) Most of the parts will carry their own
warranty through the proper vendor. When a transmission is purchased and
installed by us at our location we do a Test and Tune session. We are able
to diagnose a defective part at that time and will replace that part until
the problem no longer exists. This will not ensure that a part will not
become defective, as premature failure can still arise after the
transmission unit has left our facility.

Limited Liability:
Liability under this warranty is limited solely to the repair or replacement of
defective products. INTERSTATE
 shall not be liable for any
incidental, special, consequential or exemplary damages including but not
limited to rental cars, shipping expenses, towing fees or for any service not
expressly provided for herein.

Limited Warranty: This
warranty is given in lieu of all other warranties, expressed or implied,
including any warranty of merchantability, or fitness for a particular purpose,
on the part of INTERSTATE
 or the dealer installing the
transmission unit. No dealer nor any agent or employee thereof, is authorized
to extend or modify this warranty. All warranty work MUST be performed at INTERSTATE DIESEL AND AUTOMOTIVE’S store
warranty does not cover work done by any other shop, individual, or

Additional Owner/User
Initial 3000 Miles: Bands must be
re-adjusted to manufacturer's specifications (not all transmissions have bands
or need band adjustment depending on model). Unit must be checked for proper
fluid level and operating temperature. If for any reason you are unsure what
action to take, please contact us for instruction. It is the vehicle operator’s
responsibility to observe transmission operating temperatures and fluid levels.
If there are any issues with transmissions operation please contact us and
cease operation until further instruction or repairs have been made. Failure to
notify us about or neglect on taking corrective action to resolve any issues
that are occurring with the transmission unit will result in a void of this

First service between 1000-3000 miles after installation: Fluid
and filter and or filters must be changed (or inspected for condition, not all
filters and fluids may need to be changed), bands are-adjusted and pan bolts
re-torqued. All fluid changes, services or repairs must be documented and
recorded throughout the term of this warranty agreement. Failure to do so will
result in a termination of this warranty and no further obligation will be

Failure to perform these basic operations will result in a void

SPECIAL INSTRUCTIONS: Bench builds must be installed
with high-quality Dex III transmission fluid. Torque converter must be
pre-oiled with a minimum of 2 quarts Dex III prior to installation. Failure to
properly install torque converter (i.e. “stacking” the converter on the pump)
will result in a void warranty. Re-learn procedure must be performed after
initial heat cycle, prior to initial test-drive, and must be performed via a
professional-level scan tool. A relearn via a monitor (i.e. Edge Insight or any
other form of tuner) is not sufficient.

NOTE:  If the unit is installed by anyone other than INTERSTATE
DIESEL AND AUTOMOTIVE, the Warranty expressed hereto shall be honored for 1
year after build date. Line pressure checks, and initial break-in
checks/procedures are the responsibility of the installer, and documentation
thereof must be provided in writing within one (1) month of purchase (ie.
pressure readings at idle, cruising and wide open throttle). Failure to perform
these checks and provide documentation will result in a void
warranty. NO EXCEPTIONS. Please contact us regarding these pressure
specifications as they vary by unit and build type. 

Specific to builds utilizing Aermet
input shafts (47/48re): Aermet input shaft break-in procedure requires 3
initial heat cycles (up to temp and 8 hour cool off) and 300 mile break-in to
set the shaft PRIOR TO TOWING/RACING/SPIRITED DRIVING. Failure perform and
document these procedures will result in a void warranty.


Vin #:_____________________________________________

Date of
Install:_________________ Mileage:_____________

Customer Name

Signature:__________________________________ Date_______________


1 Year Limited Parts Warranty

APPLICATION: This warranty applies to the original purchaser, is non-transferrable, is set forth with a term of 1 year (12 months) from original purchase date, and covers parts only.

WARRANTY TERM: Warranty period begins on purchase date by end user (with proof of purchase from Authorized Dealer) and expires in 1 calendar year.

COVERAGE: Warranty covers repair or replacement of turbocharger, at the discretion of Interstate Diesel. Interstate Diesel warrants against part manufacturer defect/malfunction and assembly/workmanship error for the duration of warranty term. Repair or replacement will be determined at Interstate Diesel's sole discretion and dependent on Interstate Diesel's teardown inspection upon receival of unit.


INTALLATION: Damages as a result of improper installation (ie.failure to follow acceptable installation procedures, failure to pre-oil the cartridge before startup, failure to remove dust caps/covers prior to installation, failure to allow appropriate idle time on initial startup to set bearings/seals, restricted crankcase vent hoses or orifices, or any other improper installation practice) are not covered under this warranty.

MAINTENANCE: Damages as a result of improper maintenance (ie. oil quality, oil viscosity, air filter cleaning/replacement, DPF regeneration intervals, engine failure, charge air [boost] leaks) are not covered under this warranty.

FOREIGN DEBRIS: Damages as a result of introduction of foreign objects or debris (ie. filter contamination, items left in intake or charge air ducting, debris from a previous failure) are not covered under this warranty.

CONTAMINATION: Damages as a result of oil or other contamination (ie. engine failure resulting in steel, silica, fuel dilution, or any other contamination to be present in the oil) or oil starvation (ie. engine failure resulting in oil loss or excessive blowby resulting in oil deprivation) are not covered under this warranty.

LABOR: Labor and/or installation expenses are not covered under this warranty. 

SHIPPING: Shipping expenses are not covered under this warranty.

ABUSE: Damages as a result of abuse, misuse, accident, negligence, flood, fire, vandalism,  or anything other than part or workmanship defect are not covered under this warranty.

OTHERAny other expenses aside from part or workmanship defect (ie. shipping, storage, towing, labor, loss of wages/income, travel, etc) are not covered under this warranty.


Contact form