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Audi A4 Quattro - Project B8 Part 1 - Body Kit Fitting

Introducing our winter beater project 2008 B8 A4 2.0T quattro

Ezekiel Wheeler
Mar 24, 2014

Admittedly, most winter beaters aren't as nice as this 2009 B8 Audi A4 2.0T quattro. However, it had covered almost 100k miles, had a blown turbo, worn brakes and sloppy suspension when we found it. And having a relatively rare manual transmission, it sat unwanted for too long, so we made an offer that couldn't be refused and we were happy to pay. Let's just say it was under $10k...

So having stolen the A4 2.0Tq MT cheap enough to cover the cost of repairs, we set about finding the right parts to make our AWD snow queen into the sort of car we could enjoy when the grip levels dropped.

With phone calls made and orders placed, we waited for Audi A4 parts to arrive. But while the car sat, we had a chance to poke around it some more and discovered the high mileage had inflicted a high price on its appearance as well. The front-end was heavily stone-chipped, with road rash peppering the front screen, headlights, grille, hood and apron. Even the B8 front fenders hadn't escaped what appeared to have been several winters on heavily gritted roads.

The front spoiler had also taken a beating from poor parking and contact with foreign objects. Since we bought the car so cheap, we still had some money to invest before we passed the breakeven mark, so decided to make some repairs.

Inevitably, we weren't going to leave the Audi A4 stock. So once we got a cheap painting quote from friends in the business, we decided to upgrade the cosmetics with an authentic Audi Accessories body kit.

You may recall we fitted an Audi body kit to our TT project car (which also continues in this issue), so we knew the quality was superb and fitting was simple (saving labor costs). All we had to do was order it from our local Audi dealer and get it painted along with the hood and fenders.

Fitting is a Do-it-yourself proposition if you're relatively competent, but a workshop lift will help, and a body shop will make life simpler. The fitting process should be completed in less than one day but make sure you have friends around to lend a hand with the larger pieces. All the fitting hardware is provided but not the glue. We've listed what we used below but a bodyshop will be able to advise.

Front Spoiler

The front spoiler comes in four pieces that include two side parts, a larger lower splitter and a center detail to connect everything together.

Installation starts with cleaning the Audi A4bodywork and wiping down with alcohol cleaner to remove any grease or residue (do this to all surfaces receiving the new parts). Then test-fitting the pieces to align them. You can use the supplied pucks to ensure everything is in position and eliminate the guesswork later.

You want to sparsely glue the pucks to the bodywork and see that 30-50% of the puck is away from the bodywork. This makes it easier to remove them once the kit is fastened and minimizes potential damage to the paint.

Once you're happy with the location, sand the groove inside the front spoiler. It takes the glue and, although not specified in the Audi instruction leaflet, sanding helps to improve adhesion for the glue.

With the glue applied in the groove, press the side pieces into place. Use blue tape to secure the parts to the Audi A4 bodywork while the glue cures. Repeat for both sides and the center piece.

Allow the glue to set for 15-30min - the time is weather-dependent, with warm temps giving a shorter curing time.

Once hardened, apply Meguiar's Cleaner Wax liberally around the edge of the new parts and the bodywork. Then take a fine-edged plastic knife and remove the excess glue from the join. The petroleum in the wax reacts with the glue, allowing it to be removed more easily, while also avoiding scratches in the paint as the blade moves across it.

Finally, fit the lower spoiler. It snaps into place but you'll need to wait until the glue has cured on the other pieces before doing so - you don't want to apply pressure and have something move out of kilter before it's properly set.

When ready, apply glue to the interior groove on the spoiler and snap it into place. Be sure to use more painter's tape to hold the lip in place while everything cures overnight.

2008 audi a4 quattro four piece front spoiler 02 Photo 2/20   |   Four-piece front spoiler painted and ready for assembly
2008 audi a4 quattro four piece front spoiler glue groove 03 Photo 3/20   |   Sand the glue groove and apply a bead of adhesive
2008 audi a4 quattro four piece front spoiler side piece fitting 04 Photo 4/20   |   Fit the side pieces first, followed by the center piece
2008 audi a4 quattro four piece front spoiler center piece fitting c clamp 05 Photo 5/20   |   Use painter's tape and C-clamps to secure parts while the glue cures
2008 audi a4 quattro meguiar cleaner wax 06 Photo 6/20   |   After 15-30min, apply Meguiar's Cleaner Wax and remove excess glue visible in the join
2008 audi a4 quattro four piece front spoiler 07 Photo 7/20   |   Once the adhesive has set, press the front lip into place
2008 audi a4 quattro audi accessories four piece front spoiler 08 Photo 8/20   |   Audi A4 Quattro - Project B8 Part 1 - Body Kit Fitting

Side Skirts

Start by removing four 10mm screws that hold a plastic undertray in place. Pull it aside to access the bottom of the car. It will be screwed back into place later once the skirts are fitted and the glue cured.

Test-fit each skirt and fasten the alignment pucks to the rear wheel well. Once in position, sand the interior glue groove and apply a bead of adhesive.

With help from a friend, press the skirt to the body, working your way from the rear wheel to the front. Then break out the painter's tape again and fix it in place to ensure that sucker isn't going anywhere. Repeat for the opposite side.

Remember to apply the wax and remove the excess glue shortly after fitting. If you leave it too long, the glue will harden and be almost impossible to shift. Then allow the glue to cure overnight.

2008 audi a4 quattro side skirt trial fitting 09 Photo 9/20   |   Trial-fit the side skirts first
2008 audi a4 quattro side skirt install 10 Photo 10/20   |   Once glue is applied, start from the back and work forward
2008 audi a4 quattro side skirt locating puck 11 Photo 11/20   |   Black locating pucks help with alignment
2008 audi a4 quattro glue cleaning 12 Photo 12/20   |   Remove excess glue again
2008 audi a4 quattro audi accessories side skirt 13 Photo 13/20   |   Audi A4 Quattro - Project B8 Part 1 - Body Kit Fitting

Rear Spoiler

To fit, simply clean the trunk lid with alcohol, sand the interior glue groove, apply glue, align and press into place. Then secure with tape and revisit after 15-30min to clean the excess glue.

The fitting is straightforward but alignment is critical, so take your time.

2008 audi a4 quattro trunk spoiler test fit 14 Photo 14/20   |   Test-fit trunk spoiler
2008 audi a4 quattro trunk spoiler install 15 Photo 15/20   |   Apply glue and press down. Painter's tape is prepared and will secure spoiler in place while glue sets
2008 audi a4 quattro audi accessories trunk spoiler 16 Photo 16/20   |   Audi A4 Quattro - Project B8 Part 1 - Body Kit Fitting

Rear Diffuser

Prior to fitting this part, we installed the aftermarket B8 exhaust system we'll be using. This would help us see where the tailpipes would sit (we'll cover the exhaust system in a later issue). Our goal was to frame the new tips with the painted two-piece diffuser from Audi Accessories.

Replacing the drab black OE plastic insert, the new diffuser clips into place and is capped by a frame to hide the clip valley. The frame is a nice detail and was secured with the same sand-n-glue steps.

With our body kit fitted, the car looked so much better. The scruffy front-end was gone and instantly looked more sporty. We should point out that we painted the front grille in gloss black to tidy it, rather than go to the expense of buying a new assembly. It saved us more money and definitely added to the impact.

2008 audi a4 quattro stock diffuser removal 17 Photo 17/20   |   Unclip stock diffuser
2008 audi a4 quattro audi accessories diffuser install 18 Photo 18/20   |   Press the replacement diffuser until it clicks into place
2008 audi a4 quattro audi accessories diffuser install 19 Photo 19/20   |   Secure with supplied screws
2008 audi a4 quattro audi accessories rear diffuser 20 Photo 20/20   |   The finished item

Part Part# Supplier Price*
Front spoiler 8K0071053A X7R Audi Accessories $885
Side skirts 8K0071685 X7R Audi Accessories $885
Trunk spoiler 8K5071645B X7R Audi Accessories $565
Rear diffuser 8K0071620C X7R Audi Accessories $760
*All prices are for painted parts from the Audi dealer. Unpainted parts are cheaper


80-grit sand paper, two tubes of ELCK P1 1K-PU adhesive, Meguiar's Cleaner Wax, microfiber towels, blue painter's tape, mini C-clamps, plastic blade. All necessary locating pucks, screws, washers, speed clips and push-pins were supplied with the body kit.

Next Month

In part two we'll look at our first B8 performance modifications for the Audi A4 2.0Tq, which will entail new brakes, suspension and wheels from Stasis Revo Group. This will get the chassis sorted before we increase power with a replacement turbo, software, intake, intercooler and exhaust.


Audi Genuine Accessories
By Ezekiel Wheeler
271 Articles



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