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What's New

Strut Mount, Track Density, MkIV Volkswagen Golf/Jetta/GTI/GLI & 8N/8L Audi A3/TT
$38.00
Specials

JHM 6-Rib Alternator Belt Conversion Kit for B8-S5 w 4.2L FSI (32v)
$600.00
$540.00

Exhaust - Headers - JHM Mid-Length, Version 2 (Stainless Steel) C5-allroad 4.2L
[JHM-allroadV2Headers]

$2,750.00 $2,249.00

PLEASE READ! These headers are designed for the B6-B7 S4 chassis and will work on the C5-allroad 4.2L with some modifications. These modifications consist of; Clearancing the driver side transmission bracket, modification of the oxygen sensor J-bungs, and adapting the header downpipes to the C5 catback (we offer and recommend the Magnaflow System).

Here is a PDF that shows the minor modifications required to make this work on the C5-allroad 4.2L: Click HERE

Introducing our new and improved, JHMotorsports Version 2 Mid-Length Headers for the B6-B7 S4 with the 4.2L 40v V8!!!

STILL PROUDLY MADE IN THE USA!

As of February 2nd, 2015 these headers are IN STOCK and ready to ship!

Our Version 2, Mid-length Headers are an improvement on one of our most popular and successful modifications for the B6-B7 S4 with the 4.2L 40v V8. These re-designed headers are a well rounded performance upgrade that will net gains to all range of B6-B7 S4s with very little compromise. This includes cars with a stock motor and bolt-on modifications to fully built motors with superchargers running high boost.

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WHY A VERSION TWO?

When we first released our headers in 2008, our design was meant to maximize torque. Since then, we've pushed the B6-B7 S4 platform a lot further and we started to find that we'd need something bigger that didn't sacrifice torque. In 2012, we started to look at revisiting the design to make improvements that would keep the product growing with the market. We started testing our redesigned headers in 2013 as we started putting built motors in the B6-B7 S4.

Although they were an excellent product, our original long-tube headers are no longer available.

ABOUT THE REDESIGN

Our new headers are a mid-length style header with a larger primary runner size. Generally, longtube headers make more torque and short tube headers make more horsepower. Mid-length headers bring you the benefits of both. The larger primary sizes opens up the motor more leaving room for growth with supercharger kits, built motors, and more boost. Back in 2008 when we first came out with the headers, long tubes with smaller primaries were the way to go - we didn't have our upgraded intake manifold yet, the exhaust systems for the platform were still small, and our tuning for the B6-B7 S4 4.2L V8 was still evolving. Once we came out with our upgraded intake manifold, we found that the OEM dual-runner design was able to give the motor a lot of torque. Then, we started to build the motors to handle more power and more boost and once we did this, we found that our headers from 2008 were corking the motor.

PERFORMANCE

When compared to our original header design, these new headers will give you more power on the top end without sacrificing power down low. They'll allow you to take advantage of more of our modifications like the JHM Intake Manifold or the JHM Supercharger Kit or even our built motor. As of December 27th, 2014, we've gone 11.1 at 128 mph with our in-house B6-S4 which features these headers, a fully built motor, and our Vortech Supercharger kit. More results are coming soon!

They are also more modular and easier to install. We've made them specific to either manual or automatic transmission cars and you can also use your stock oxygen sensors with these headers instead of having to buy longer sensors or re-wire and lengthen your oxygen sensors.

JHM HEADERS AND CAT-BACK VERSUS OEM EXHAUST COMPONENTS

Our JHM Version 2 Headers are a COMPLETE replacement for the restrictive OEM exhaust manifolds and OEM downpipes. Our headers will connect directly to a JHM-Fast Intentions true 2.5 inch cat-back or any other cat-back with a 2.5 inch connection to the downpipes.

FITMENT:
-2004-2005 C5-allroad 4.2L

PARTS INCLUDED:
- 1x Stainless steel, driver side header assembly with v-banded flange
- 1x Stainless steel, passenger side header assembly with v-banded flange
- 1x Stainless steel, driver side downpipe with v-band connection
- 1x Stainless steel, passenger side downpipe with v-band connection
- 2x OEM exhaust manifold gaskets
- 3x OEM exhaust manifold studs (to replace the 3 bolts removed)
- 3x OEM Exhaust manifold nuts (to replace the 3 bolts removed)
- 2x V-band clamps for header to mid-pipe connection

OPTIONS: Select your choices from the drop down boxes below.
- 2.5" Stainless Steel Exhaust Clamps (Pair) for mid-pipe to cat-back connection: Select "Yes" if you would a new pair of high-quality, 2.5" exhaust clamps for the connection between our headers and your 2.5 inch cat-back.
- Downpipe Configuration: We offer downpipes for our Version 2 headers with or without high-flow catalytic converters. Our catalytic converters are a high-quality, racing cat with a spiral metallic substrate. We also give you the option to order both "straight pipe" mid-pipes AND "cat-pipe" downpipes (a total of two sets of downpipes).
- Transmission Type: Automatic is the only option. If you have done a manual swap, please contact us to determine which downpipes would be necessary based on your transmission.

INSTALLATION NOTES:
- The engine MUST be lowered substantially or removed from the vehicle to install these headers.
- Our headers have primary oxygen (O2) sensor bungs that are close to the stock location but end up pointing the sensors in a different direction. When routing the O2 sensors it is VERY important you secure the wires so they don't rub on anything. Specifically, make sure that the sensors are clear of the shift linkage on the driver side of the transmission and that they aren't close to the exhaust pipes so they don't burn through. Zip ties work really well for securing the sensor wires.
- When removing your O2 sensors from your stock manifolds and downpipes, it is very helpful to label the sensors to note which sensor is for the primary versus secondary location and the driver versus passenger side. The O2 sensors must be installed into the same location they were removed from.
- Once you install our additional studs you will have studs and nuts for ALL of the mounting holes. Torque all nuts on the cylinder head to header flange mounting studs to 25Nm or 19ftlb.
- It can be difficult to get to the lower nuts on the headers so you will need to get to those first and use tools like crow's feet and Gearwrench box end wrenches. Once the headers are fully secured and tightened, you can re-install the motor mounts.
- The alternator may have to be removed to install the headers in order to gain access to certain nuts. Some cars may require the alternator coolant pipe bent slightly for additional clearance.
- It is HIGHLY recommended to wrap the headers in the area where the stock manifolds were located to keep heat from the factory wiring, motor mounts, alternator, and coolant pipes. You should only have to go about 1 foot at most past the end of the motor since the factory downpipes were not shielded and our headers travel along the same path.

**THESE HEADERS ARE FOR OFF-ROAD USE ONLY**
Like many of the performance products we sell on our website, these headers are for OFF-ROAD USE ONLY!!! Ordering these headers with our high-flow catalytic converters will NOT change this. With that being said, our high-flow catalytic converters do well to reduce hydrocarbons and carbon monoxide (HCs and CO). However, they are limited in their ability to reduce Nitrous Oxide (NOx). Customers in the state of California with our high-flow catalysts have told us that they have passed the tailpipe or "sniffer" smog test with our cats installed. Remember that aftermarket catalytic converters are not legal for public road use in the state of California. Though they may pass an emissions test out of the tailpipe, they will still fail a visual test. In the state of California ONLY stock catalytic converters or catalysts with a CARB EO number are technically "smog legal." Our high-flow catalysts do not have a CARB EO number. Please refer to your local laws and regulations for more information.

For shipping quotes: Please sign in or join then put the items you want in your shopping cart and proceed to checkout.

Fitment:
Note: JHM works hard to make all fitment charts as accurate as possible please read the product description to make sure this is correct for your vehicle.
Make Model - Chassis Engine
Audiallroad - C5 (2001-2005)all


Available Options:
2.5" SS Exhaust Clamps (Pair):
Downpipe Configuration:
Heat Shielding:
Transmission Type:
This product was added to our catalog on Monday 27 June, 2016.
THIS PRODUCT IS FOR RACING COMPETITION ONLY AND IS NOT LEGAL FOR USE IN HIGHWAY OR STREET VEHICLES OR OTHER NON-RACING COMPETITION OFF-ROAD VEHICLES. BY PURCHASING THIS PRODUCT YOU ACKNOWLEDGE ITS INTENDED USE.
Quantity:


Bolt (M12x127) for Mechanical Adjuster (OEM) B6-B7 S4, C5 A6-allroad w/ Chain 4.2L

Transmission Mount (034Motorsport), Density Line for B5 A4-S4, C5 A6-allroad (street/track density)

Valve Cover Gasket Kit(OEM Both w cam-spark plug seals) for B6/B7 S4 and C5-allroad w chain 4.2L

Injector O-ring (each) for all Audi NON-FSI

Snub Mount, Polyurethane, (034Motorsport) for B6-B7-C5 Chassis

Crank Seal, Rear or Rear Main Seal (OEM) for B6-B7-B8-C5-C6-C7-D3-D4-Q5-Q7-R8 3.0T-3.2L-4.2L-5.2L

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Copyright © 2017 JH Motorsports

JH Motorsports is not affiliated with or endorsed by Audi AG, Audi of America, Volkswagen AG, or Volkswagen of American or any other car company mentioned or whose logos are displayed in these web pages or our store. Audi®, Quattro®, Avant®, A4®, S4®, A6®, RS4®, RS6®, Allroad®, TT®, and Tiptronic® are trademarks of Audi AG. Volkswagen®, VW®, Golf®, Jetta®, Passat® and Beetle® are trademarks of Volkswagen AG. While we try to keep everything current, JH Motorsports is not responsible for errors in pricing on this web site. All prices are in US Dollars.

Some of these modifications and or parts are intended for off-road use only and may violate Federal or your State emissions standards. Also, end user assumes all risk with product performance and installation. JH Motorsports is not responsible for any bodily or mechanical harm, etc. as a result of use or misuse of any products.