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JHM C5-allroad 4.2L 0A3 6-Speed Manual Transmission Conversion-Swap Parts List

SKU: JHM-0A3allroadV8PartsList
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NOTE: THIS IS NOT A PRODUCT THAT IS FOR SALE. THIS IS A LIST THAT WE HAVE MADE PUBLIC TO HELP YOU GATHER THE COMPONENTS NEEDED TO USE A 0A3 TRANSMISSION IN YOUR C5-ALLROAD. DO NOT PURCHASE THIS.

JH Motorsports is pleased to be able offer a complete parts list or "recipe" for those looking to convert their automatic C5-allroad 4.2L to a 6-speed manual using the 0A3 transmission out of the B6-B7 S4. The 0A3 is a MUCH better option due to the gear splits being closer and a slightly lower final total gear ratio, thus you you get much better acceleration and performance. Also the 0A3 has more durable and modern 3 piece synchros that allow smoother, consistent high RPM shifting suitable for big turbo builds needing to live in the high RPM range. The day to day driving is much smoother and easier as well due to this modern design. The 0A3 is much easier to get into reverse because the 0A3 has a reverse synchro unlike the 01E which is a direct pinion gear engagement. Another long term benefit of the 0A3 of the 01E is that internal hard parts like gears and collars are about 50% to 65% less than the older 01E transmission and much more good used parts are readily available vs the early 1990s designed 01E. In our 10+ years of racing the B7 RS4 and B6 B7 S4 we have shifted a stock 0A3 transmission at 9000 RPM without issues. The B6-B7 S4 0A3 shares the exact same synchros as a much lower ratio RS4 transmission that has a stock redline of 8250rpm. Most of these parts are easily sourced good used parts and a few are specialized components that we design, manufacture and sell specifically to make this swap a reality.
NOTE: We don't recommend the RS4 0A3 transmissions in a B5 or C5 due to much lower ratios than the B6-B7 S4 and much higher cost to acquire.

Here is a in depth look at a JHM Supercharged, 0A3 Swapped 4.2L C5-allroad:

REUSED PARTS - These are the few parts that you will reuse from your car.
1 x Crank sensor.
1 x Driveshaft - to be modified as per below.
1 x Starter.
1 x 4.5mm trans to engine spacer and engine dowels.

ELECTRONICS
1 x JHM B5 C5 Speedometer converter for B6-B7 S4 0A3 transmission conversion-swap CLICK HERE

ENGINE PARTS
1 x JHM conversion tuned ECU. (Contact us to purchase!)

TRANSMISSION AND CLUTCH PARTS
1 x JHM B5 C5 Trans Mount Bracket Kit for B6-B7 S4 0A3 transmission conversion-swap CLICK HERE
2 x B5 S4 and C5 A6 2.7t 01E Trans mounts, we recommend 034 street density available on our site. PN=034-509-4046
1 x Set of B6-B7 S4 0A3 transmission to block bolts.
2 x Right Front B6-S4 6MT CV shafts.
1 x B6-B7 S4 0A3 transmission. (note, no spacer needed this car already came with the correct one.) Also the crank sensor needs to have the aluminum spacer removed that it originally had for the 5hp19 trans)
1 x B6-B7 S4 clutch and flywheel combo - JHM Lightweight Flywheel and Clutch Combo is recommended. (uses same starter so that is why we need to run this setup)
1 x B6-B7 S4 shift rod setup (all 3). NOTE: The body does need clearancing for the B6 rods sometimes due to rods being shorter and sitting more forward in the car, also when using a JHM shifter it helps to clearance for the back two shifter assembly mount holes to access the bolts due to the spacers.
1 x B6-B7 S4-RS4 OEM or JHM shifter. These are clamp on knob, you can run B5-S4 or C5 A6-allroad 01E shifters but they must be 01.5 and up with an angled base, keep in mind the B6-B7 shifter is much better
1 x B5-C5 plastic shifter box and boot only.
1 x B6-B7 S4-RS4 0A3 Drivers side front CV shaft shield.
1 x B6-B7 S4-RS4 0A3 Passenger side front CV shaft shield.
6 x CV shaft shield bolts.
1 x B6-B7 S4-RS4 0A3 Rear driveshaft shield.
2 x Driveshaft shield bolts.
1 x B5-C5 clutch master cylinder.
1 x B6 S4 early slave cylinder.
1 x JHM stainless clutch line (OEM works too but is more difficult install).

DRIVESHAFT AND REAR DIFF PARTS
1 x C5 A6 2.8L 5-speed Rear diff- Diff code EUT with 3.89 ratio to match B6-B7 S4 transmissions front diff ratio.
1 x ADAPTED DRIVESHAFT (MAKE IT LONGER BY 1.5" on the front side of the center bearing). Any good driveshaft shop can do this, expect to pay between $250 to $400 depending on your shop. This is because they need to cut the shaft, add material and then rebalance both the front and rear sections. Keep in mind it is a great time to get a 034 driveshaft bearing from us, 2 x driveshaft boots (they are torn a lot which is bad for the joints) and or cv joints as needed to freshen it up and keep vibrations down.

INTERIOR PARTS
1 x B5-C5 Clutch pedal assembly with all 3 pedals.
1 x Wiring and pigtails for clutch pedal assembly.
1 x Shift boot and bezel specific from a 2000-2004 MT C5 A6 or allroad. NOTE: the 02 and up have a clamp on knob.
1 x Shift knob. OEM or JHM. OEM are more difficult to find.

If you have an questions regarding this swap/conversion, please don't hesitate to reach out to us. We have done this swap/conversion several times and can help you through any step of the way. If you are having troubles locating some of these parts, we can get them for you. Shoot us an email at Sales@JHMotorsports.com.

NOTE: THIS IS NOT A PRODUCT THAT IS FOR SALE. THIS IS A LIST THAT WE HAVE MADE PUBLIC TO HELP YOU GATHER THE COMPONENTS NEEDED TO USE A 0A3 TRANSMISSION IN YOUR C5-ALLROAD. DO NOT PURCHASE THIS.


This product fits the following vehicles:
Make Model Chassis Engine
Audi allroad C5 (2001-2005) 4.2l V8 40v
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Off-road Use

By Purchasing any Off-Road use ONLY products from JH Motorsports, Inc. I acknowledge and understand the following disclosure. (This notice is located at the bottom of the page description of affected products on our website.)

Vehicle Code § 27156:
(b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.
(c) No person shall install, sell, offer for sale, or advertise any device, apparatus, or mechanism intended for use with, or as a part of, a required motor vehicle pollution control device or system that alters or modifies the original design or performance of the motor vehicle pollution control device or system.

Health and Safety Code § 43000:
43001. The provisions of this part shall not apply to:
(a) Racing vehicles.

As the aforementioned code sections outline, it is against the law to operate or use a vehicle on public streets or highways with modified, altered, or disconnected motor vehicle pollution control devices. This may include but is not limited to, Evaporative Fuel Controls, Catalysts, DPF, PTOX, PCV Systems, Exhaust Gas Recirculation Systems, Oxygen Sensors, Thermostatic Air Cleaners, Air Intake Systems, Fuel Injectors, Regulators, Adjustable Cam Gears, ECU Programming, Mapping, or other Computer Modifications. Air Pumps, Air Injection, Timing, and any other Emission System Modification(s).

Purchaser acknowledges and certifies to JH Motorsports Inc., that Purchasers vehicle will only be used for racing applications or off road vehicle use only. Purchaser requests these modifications for the purpose of enhancing the vehicle for competitive Racing Applications and will not use this vehicle on public streets or highways. Purchaser agrees to indemnify JH Motorsports Inc., all employees, officers, owners, and subsidiaries for any civil or criminal liability arising out of use of Purchasers vehicle on public streets or highways as Purchaser has been duly notified of the laws and regulations regarding disconnecting, alteration, or modification of a vehicle’s pollution control devices. Purchaser understands and has been advised the driving of a vehicle on public streets or highways could result in criminal or civil penalties.

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Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.

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