ASSEMBLY OF THE LEFT SIDE WITH HEADER
NOTE: Use anti-seize on all header bolts and oxygen sensor threads.
1. Insert the left-side header through the chassis from below.
2. From above, install the gasket.
3. Using the supplied 8mm lock washers over the factory exhaust bolts, start all the header bolts prior to tightening, then evenly tighten all the
header bolts to 20-25 ft./lbs.
4. Reinstall the steering shaft and tighten the bolt to factory specifications.
5. Reinstall the spark plugs and tighten.
6. Reinstall the spark plug wires. Check to ensure that they do not contact the header.
7. Reinstall the left-side A.I.R. tube assembly.
8. Install the left-side pre-catalytic converter oxygen sensor into the left-side header collector. NOTE: The oxygen sensor simulator needs to
be installed according to directions supplied by the simulator manufacturer. Use the 28” supplied extension to complete the simulator
install.
NOTE: These Oxygen Sensor Wire Extensions are made long enough to use either the Oxygen Sensor with the 8” wire length or the Oxygen
Sensor with 12” wire length. Any excess wire length after installation should be looped and secured into a non-used and non-heated
cavity or pocket.
9. Reinstall the small left-side heat shield/ deflector and oil filter.
ASSEMBLY OF THE RIGHT SIDE WITH HEADER
1. Insert the right-side header through chassis from below.
2. From above, install the gasket.
3. Using the supplied 8mm lock washers over the factory exhaust bolts, start all the header bolts prior to tightening, then evenly tighten all the
header bolts to 20-25 ft./lbs.
4. Reinstall the spark plugs and tighten. Reinstall the spark plug wires. Check to ensure that they do not contact the header.
5. Reattach the EGR tube by reinstalling the (2) two 8mm bolts through the EGR plate.
6. Reinstall the dipstick and tighten the retainer bolt. Reinstall the right-side A.I.R. tube assembly.
7. Install the right-side pre-catalytic converter oxygen sensor into the right-side header collector. NOTE: The oxygen sensor simulator needs
to be installed according to directions supplied by the simulator manufacture. Use the 28” supplied extension to complete the simulator
install.
8. Reinstall the starter (if removed).
NOTE: These Oxygen Sensor Wire Extensions are made long enough to use either the Oxygen Sensor with the 8” wire length or the Oxygen
Sensor with 12” wire length. Any excess wire length after installation should be looped and secured into a non-used and non-heated
cavity or pocket.
PRIOR TO FINISHING CHECK LIST
1. Inspect the steering shaft for proper installation.
2. Check to ensure that no wires will come in contact with the headers.
3. Check to ensure that no (l/s and r/s) heat shields come in contact with the headers.
4. Check to ensure that all emission A.I.R. hoses are clamped properly.
5. Check to ensure that any and all electrical connections that were disconnected are properly reconnected.
6. Check to ensure that all oxygen sensor wires are looped and secured in a non-used and non-heated cavity or pocket.
7. NOTE: Y-PIPE PART NUMBER 16723HKR, 16723-1HKR, OR 16723-2HKR IS RECOMMENDED TO BE USED AND INSTALLED WITH
THIS HEADER P/N 2291HKR OR 2291-1HKR.
8. Reconnect the battery. Start the car and check for leaks.
LIMITATION OF LIABILITY –DISCLAIMER:
The regulation of emissions production, noise levels, and safety standards is undertaken by the federal government, each of the fifty state
legislatures, and by many local municipalities, towns, and counties.
HOOKER makes no warranties of merchantability, of fitness for particular purpose, or that its products are approved for general use, or that its
products are approved for general use, or that its products comply with laws, regulations, or ordinances in the state where they may be sold to
the ultimate purchaser, the consumer.
Unless expressly stated to the contrary in the catalog, instruction sheet; or price list, the entire risk as to the conformity of any company product
in any such state and as to repair should the product prove to be defective or non-conforming, is on the retail purchaser, the buyer, the ultimate
consumer, of such product and it is not upon the seller, distributor, or manufacturer.
In this connection, the retail purchaser, the buyer, the ultimate consumer assumes the burden of the entire cost of any and all necessary service,
alterations, or repair.
THE FOREGOING STATEMENT LIMITS THE LIABILITY OF THE MANUFACTURER.
California vehicle code, sections 27156 and 38391, prohibits the advertising, offering for sale, or installation of any device, which modifies a
vehicle’s emission control system, unless exempted, unless otherwise noted. HOOKER™ Headers that have not received an Executive Order
(E.O.) exemption from these code sections are not legal for sale or use in California on vehicles originally equipped with catalytic converters,
except for racing vehicles, which may never be driven upon a highway. Check with your local authorities to determine if these headers are legal
for use in your particular area.
199R10391
Revision Date: 7-23-14
