The following kits are intended for '79-'95 Toyota trucks and 4Runners. When using these kits on
vehicles originally equipped with the 22R, 22R-E, or 22R-TE engine, the ORS weld-on motor mounts
or performance motor mounts are required (or customer fabricated motor mounts). 22R and 22R-E
equipped vehicles will also require the use of a different transmission, see our
technical aricle for details. Additional
wiring charges and core charges may apply for earlier models.
•3.4L Full Conversion Kit - Truck/4Runner
$1740.00 ORS-EC020 Manual Transmission
$2285.00 ORS-EC022 Auto Transmission
This kit includes all NEW parts necessary for the conversion. This kit is VERY complete and
is designed to prevent the customer from going to the parts store 20 times during the conversion.
The idea is to literally open the box and perform the conversion with high quality new parts.
These parts are package priced to save the customer money in the long run. We highly suggest the Full Kit.
Parts Included: Manual Kit | Auto Kit
•3.4L Standard Conversion Kit - Truck/4Runner
$1185.00 ORS-EC025 Manual Transmission
$1825.00 ORS-EC026 Auto Transmission
This kit is similar to the full kit but a few items were removed that can be re-used from
the original vehicle or may not need replacement.
Parts Included: Manual Kit | Auto Kit
•3.4L Basic Conversion Kit - Truck/4Runner
$960.00 ORS-EC027 Manual Transmission
$1460.00 ORS-EC028 Auto Transmission
This kit includes the items exclusive to Off Road Solutions. These items are very helpful
when doing the swap. Many other parts will still be needed to complete the conversion.
Parts Included: Manual Kit | Auto Kit
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•3.4L Conversion Wiring Harness - Truck/4Runner
$695.00 ORS-EC021 Manual Transmission
$795.00 ORS-EC023 Auto Transmission
Takes all the wiring guess work out of a 3.4 liter conversion. This harness allows you to plug
a 3.4 liter engine and computer straight into your '85 - '95 22R-E or 3.0L Toyota Truck or 4Runnner.
Core charges may apply on some models.
•3.4L Conversion Wiring Harness - Stand Alone
$775.00 ORS-EC024 Manual Transmission
$850.00 ORS-EC029 Automatic Transmission
This is a stand alone harness that takes care of all the wiring when installing a Toyota 3.4L
V6 into any make or model. Great for carbuerated trucks, rock buggies, other makes. Core charges
may apply on some models.
Have a custom application or does your current harness need to be replaced? Check out our
Monster Stand Alone Wiring Harnesses.
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•3.4L Conversion Crossover Pipe
$370.00 ORS-EC070
The OEM 3.4L exhaust uses a crossover pipe that ties the two manifolds together behind
the engine, above the bell housing. This pipe, however, exits on the passenger side. It
is more difficult to route the exhaust down the passenger side, due to brake and fuel lines,
the transfer case, and the fuel tank. 
This ORS custom crossover pipe is similar to the 3.4L
OEM unit, but routes both banks to the driver side. This "dumps" the exhaust on the proper
side of an older Toyota, keeping the undercarriage free of any crossover exhaust pipes. When
ordering an ORS crossover pipe, note the year of the donor engine. This will denote the type
of exhaust manifolds on the engine (either can be used). The manifold flanges (2) on the OEM
crossover of your 3.4L must be provided, or a core charge will be incurred. Crossover pipe
includes new manifold exhaust studs, exhaust nuts, manifold gaskets, and a weld-on flange with
necessary gasket and hardware to continue the exhaust system.
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•ORS EFI Conversion Harness
$470.00 ORS-EC001 - '89-'95 P/U, '90-'95 Truck/4Runner Donor Fuel Injection
$520.00* ORS-EC002 - '85-'88 P/U, '85-'89 Truck/4Runner Donor Fuel Injection
Toyota built a legend when they built the 22R. They really got it right when they built
the 22R-E. While neither version is very fast, Toyota sure built a reliable fuel injection
system. The ORS EFI Conversion Harness is designed to help the rest of the world achieve the
22R-E status. In this circuit there is the ECU (computer), the engine harness,
and the body (dash main) harness. Unfortunately for those who want to convert, Toyota "tangled"
about 40% of the EFI circuit into the body harness. As one may guess, this 40% is a necessary part
of the EFI circuit. Our harness is designed to replace the body harness section of the circuit.
This makes for an easy installation into an older Toyota, rock buggy, or whatever ya got.
* There is a core charge of $45 on ORS-EC002 for the donor fuel injection body harness/connectors.
Have a custom application or does your current harness need to be replaced? Check out our
Monster Stand Alone Wiring Harnesses.
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3RZ-FE Engine Swap Harnesses
After years of perfecting our 3.4L swap we are proud to announce our new 3RZ wiring harnesses. Our harness will
allow you to mate a 3RZ 2.7L from a Tacoma, 4Runner or T100 to your older Toyota or buggy. These are perfect for the
person looking to complete this swap but not wanting to deal with the headache of "sorting out" the wiring.
As with most Toyota EFI systems, about 45% of the engine electrical circuit was placed in the main or "body" harness
of anything with a 3RZ-FE engine. Using this main harness in a swap can be very difficult, frustrating and messy. The
ORS harness is designed to replace this portion of the engine circuit in 3RZ swap.
This harness connects directly to the 3RZ-FE engine computer and engine harness. The ORS-EC101 also connects directly
to your vehicle, making the wiring very simple. The ORS-EC100 is designed for something without an engine wiring circuit
already in place, such as a rock buggy or carbuerated truck. Wire leads from this harness are connected to +, ground, and
start signals, still a simple install.
-At this time we are only offering the harnesses in a manual transmission application.
•3RZ 2.7L Conversion Wiring Harness - Truck/4Runner
$600.00 ORS-EC101 - Manual Transmission
Takes all the wiring guess work out of a 3RZ conversion. This harness allows you to plug a 3RZ engine and computer
straight into your '85 - '95 EFI Toyota truck.
* There may be a core charge on some models, please call for more information.
•3RZ 2.7L Conversion Wiring Harness - Stand Alone
$700.00 ORS-EC100 - Manual Transmission
This is a stand alone harness that takes care of all the wiring when installing a Toyota 3RZ into any make or model.
* There may be a core charge on some models, please call for more information.
Have a custom application or does your current harness need to be replaced? Check out our
Monster Stand Alone Wiring Harnesses.
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•Monster Stand Alone Wiring Harnesses
$949.95 $849.95 Introductory Price - Call to Order
Ever beat your head against a wall on a custom build with hard to read wiring diagrams and a dizzying rat's
nest of wires? We took a great leap with our conversion harnesses being able to plug into an existing, basic
electrical system, but a problem still lied in the way for our customers building rock buggies, race trucks,
custom builds, or a vehicle with faulty older wiring needing to be completely replaced. Essentially this is
our conversion harness, plus the rest of the entire vehicle's (save the engine harness) wiring. These harnesses
are for the same engine applications: 22R-E, 3RZ-FE, and 5VZ-FE. To dispel confusion, this harness DOES NOT
ELIMINATE the need for an ECU and the engine/injector harness; they are still needed for your engine to, well, work.
Our wiring harnesses are a testament to our professional standards for quality workmanship. Our harnesses have
found their way into rigs such as WEROCK world champion Brian Ellinger’s F-Toy and other WEROCK and F-Toy rigs.
See Brian's harness (pictured). This harness has all the bells and whistles, running many more circuits than
the base harness we sell, so if it looks big, that is because it is.
All connections are glued heat shrunk for corrosion resistance and a long dependable life. Not only that,
but all the connections come with easy to read labels and instructions as well, so you aren't guessing what
goes where and spending hours scratching your head. We don't stop there either; all the wires are fully loomed
and taped for protection as though you are getting this custom harness from Toyota themselves. Finally to top
it all off, we don't sacrifice quality and dependability by using only a few relays. We use enough relays to
safely carry all the circuits needed in each specified application. What this translates to is more wheeling
and peace of mind, knowing that you will never have to think of your wiring harness again.
The base harness comes with the engine conversion portion, ignition/accessory/start switches and relays,
main fusible link, charging system circuit, and fuse panels that can be easily added to. Also, all switches
are rocker switches (like ARB locking differential's) that not only function well but also provide a professional,
"cool" look. The customer simply connects this harness to the battery's positive terminal and connects to ground.
The only wiring left for the customer is the battery cables.
These kits can be custom tailored for length and are completely customizable, so if you want a pimp version
like Brian, you can get it. Upon request additional circuits can be added for an additional charge. These include:
Headlights, Taillights/Turn signals, Brake light, Auxiliary lights, Horn, Radio, Gauges, Etc. Introductory price
for the base harness is $849.95, $100 off the regular price of $949.95. Let us at ORS get you and your rig back
where they belong: back on the road and back on the trail!
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