Northwest Off-Road Specialties - Toyota 4x4 Truck Parts & AccessoriesToyota 4x4 Truck
NWOR Toyota 4x4 Performance Parts
Toyota Truck Parts and Accessories
36th Year Anniversary

20/22R Headers

20/22R HEADERS
ULTRA TORQUE HEADERS
| 3.0 V6 HEADERS
|
2.7 HEADERS
CATALYTIC CONVERTERS | HEADER SERVICE PARTS / STUD KITS
ENGINE SWAP HEADERS

HI-TECH ULTRA TORQUE
TRI-Y HEADERS

Ultra Torque Header

NWOR's TRI-Y DESIGN: This design pairs the small 1-3/8" primary tubes into 1-1/2" secondary tubes-a four into two-two into one formation. On the 20-22R Toyota these small tube Tri-Y headers significantly increase the cylinder scavenging effect by using the pulse of exhaust velocity from another cylinder. The Tri-Y is especially effective on Toyota's 20-22R cross-flow head design. NWOR offers eight 4cyl headers, all with different, welded-in-place emission fittings. All fit properly, are guaranteed, and produce strong horsepower gains in the 2000-4000 rpm range, especially on the EFI Toyota engine. Dollar for dollar, no single investment in Toyota truck performance equipment will do as much to improve the low and mid-range performance and efficiency of the 20-22R Toyota engine as our NWOR Tri-Y HEADER SYSTEM.


This NEW and IMPROVED header surpasses the best, which
we already had!!!

BENEFITS: Dramatic increases in horsepower and low and mid-range torque, up to 25% over stock-12% over any four-into-one header. Significant gains in fuel economy. Quick and simple installation. This header fits properly!

1979-95 Header System non-emission version
N31001
1979-83 Header System (Type A)* with smog equipment fittings,
O2 sensor and hot air pick-up
N31002
1984-85 Header System (Type B)* with smog equipment fittings,
O2 sensor and hot air pick-up
N31003
1984-85 Header System (EFI) with O2 sensor only
N31004
1986-87 Header System (Type B)* with smog equipment fittings,
O2 sensor and hot air pick-up
N31005
1986-87 Header System (EFI) with O2 sensor only
N31006
1988-95 Header System (EFI)* (Type B)* with smog equipment fittings,
O2 sensor and hot air pick-up
N31010


EMISSION HEADERS*

All emission headers feature fully machined air injector and oxygen sensor mounting flanges welded in place in the proper location. This allows proper retrofitting, and is acceptable at most vehicle inspection stations. NWOR offers optional precision-engineered header-to-catalytic converter hook-up pipes. To Order: (Example) N31002 header uses a N31002-HP converter pipe. See page 10 for photo.
* IMPORTANT ORDERING INFO:
Please check carefully before ordering. Look at your exhaust manifold after removing the heat shield to identify emission tubing style as shown below. NWOR headers are built precisely for each model's emission fittings.


TypeA


TypeB

 



Site Updated 5/5/2014

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