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Description
Integrated Engineering Adjustable Cam Gear Kit Audi A6 C5 98-04/Passat B5 1.8T 20V 98-05)DESCRIPTION When pushing your VW or Audi engine to the limits, a set of IE Billet Main Caps will provide a rigid foundation for your crankshaft, reducing main bearing wear. These main caps are in house CNC machined steel for a massive upgrade over the stock cast main caps. WHEN TO UPGRADE YOUR MAIN CAPS The stock main caps are cast and lack the rigidity required for a reliable high power build. We recommend upgrading to a set of IE Billet Main Caps
DESCRIPTION
When pushing your VW or Audi engine to the limits, a set of IE Billet Main Caps will provide a rigid foundation for your crankshaft, reducing main bearing wear. These main caps are in-house CNC machined steel for a massive upgrade over the stock cast main caps.
WHEN TO UPGRADE YOUR MAIN CAPS
The stock main caps are cast and lack the rigidity required for a reliable high power build. We recommend upgrading to a set of IE Billet Main Caps when building a performance engine exceeding 500HP. These VW/Audi 4 cylinder main caps are CNC machined in house to exacting tolerances for an easy fitting process. They provide extreme rigidity to the main bearing and crankshaft, which is a necessity for high horsepower engines.
SPECIFICATIONS
- Replaces factory cast main caps
- Reduces main bearing wear
- In-house CNC machined
- Manufactured in USA
- Stable crankshaft platform
- Perfect for short block reliability
COMPATIBILITY
- 1996-2003 Audi A3 (MK1-8L) 1.8T 20V
- 1996-2003 Audi S3 (MK1-8L) 1.8T 20V
- 1998-2004 Audi A6 (C5) 1.8T 20V
- 1998-2004 Audi A6 Allroad (C5) 1.8T 20V
- 1998-2005 Volkswagen Passat (B5-B5.5) 1.8T 20V (LATE 06A ENGINES ONLY)
- 2002-2005 Audi A4 (B6) 1.8T 20V
- 2005-2008 Audi A4 (B7) 2.0T FSI
- 2005-2011 Audi A6 (C6) 2.0T FSI
- 2006-2010 Volkswagen Passat (B6) 2.0T FSI (TIMING BELT ENGINES ONLY)
- 2006-2013 Audi A3 (MK2-8P) 2.0T FSI (TIMING BELT ENGINES ONLY)
- 2006-2013 Audi S3 (MK2-8P) 2.0T FSI
- 2008-2015 Audi TTS (MK2-8J) 2.0T FSI
- 1996-2001 Audi A4 (B5-B5.5) 1.8T 20V (LATE 06A ENGINES ONLY)
- 2005-2011 Audi A6 Allroad (C6) 2.0T FSI
- 2000-2006 Audi TT (MK1-8N) 1.8T 20V
- 2008-2015 Audi TT (MK2-8J) 2.0T FSI (TIMING BELT ENGINES ONLY)
- 1998-2011 Volkswagen Beetle (1C-9C-1Y) 1.8T 20V
- 2006-2015 Volkswagen EOS (1F7) 2.0T FSI (TIMING BELT ENGINES ONLY)
- 1999-2005 Volkswagen Golf (MK4) 1.8T 20V
- 2012-2012 Volkswagen Golf R (MK6) 2.0T FSI
- 1999-2005 Volkswagen GTI (MK4) 1.8T 20V
- 2006-2009 Volkswagen GTI (MK5) 2.0T FSI (TIMING BELT ENGINES ONLY)
- 1999-2005 Volkswagen Jetta/Jetta GLI (MK4) 1.8T 20V
- 2006-2010 Volkswagen Jetta/Jetta GLI (MK5) 2.0T FSI (TIMING BELT ENGINES ONLY)
- **Requires OEM thrust washers Part Number 06A105637A only.
- **Fits pre-2006 VW 2.0L, 1.8T, G60, 16V, and 8V 4 cylinder engines. Does not fit late 2006+ EA888 Gen1/2/3 timing chain engines.
- IE Billet Main Caps are machined to fit many VW/Audi 4 cylinder engine blocks. However, for precise fitment they will require a line bore and hone by a certified machine shop. Be sure to check that your machine shop can perform an align bore and hone on the mains before ordering. The main caps will need to be align bore and honed using the main bolts or studs of your choice, be sure to supply your machine shop with this hardware as well for proper fitment. Main journal housing bore size: 2.3228"-2.3236".
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 4
Indestructible, but maybe too much?
Color: Orange, Size: Medium
Not too enticing for my dog, but, it is definitely indestructible! He chews on it every so often, but less than I had expected. I think the material is so rock hard that it offers little incentive for him to chew on it.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Best I've Tried
Color: Blue Shark, Size: Medium
With my pitty pup, there's no such thing as an indestructible toy, but this has been the most impressive so far. It's lasted days vs the typical minutes his new toys survive. It has a squeaker, but no fluff, and this has been great. He's been trying to get at if for a long time with no success! He has tore thru the rubber portion, but there's still plenty of play left in this toy. The 3 different textures keep him interested vs the hard material toys he rejects or chews on them too long and I worry about tooth wear. Definitely buying more.
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Great product! Durable, chewable, awesomeness!
Color: Grilled color, Color: Grilled color
Very well made and durable. My dog hasn't left them alone since i opened them. Hes been at it for about 45 minutes straight now! Lol. He's an avid chewer. He will chew thru and fabric or cloth toys in less then a day. But these are what he really likes because they take time to chew apart. The shapes, are great, because one he props up with his paws and chews and it seems like it's easy to grip for him. Thru are hard so if you have hard floors it can get a bit noisy when he drops them. Over all this is a great product. Safe, chewable, long lasting, fun shape looks real to him (i think lol), Me and my dog Lucky are both happy with his new toys!
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Recommend for very heavy chewers
Color: Grilled color
My aggressive chewers love these! It’s been a few weeks and still in one piece and man they chew them for hours on end.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Amazingly great product!
Color: Grilled color
I’m not just saying this, ok, this is not hyperbole: this is THE best nylon bone for chewing that I have ever purchased. And you get TWO of them for relatively less expensive than most chew toys give you one! I have 2 golden retrievers, and if you know goldens, you know that they are some of the most relentless and powerful chewers around. So I can’t give them almost any toy other than rubber stuff or it will be destroyed in a period of time that doesn’t make it worth it. One of them even figured out how to destroy a supposedly indestructible toy made out of kevlar! She was able to get into it through the seam, which is not kevlar ha ha. Anyway, I digress; I never even considered nylon chews because they suck! Usually. Usually my dogs in the past have lost interest with them in less than a day. I took a chance on these mainly because of the novel shapes, the fact that they give you two, and the low price. Both my goldens LOVE these! Not just for one day, but going on weeks now! I don’t know if it’s the flavor or what, but I will see them gnawing on one of them at some point every day. And they CAN’T destroy them (I knew nylon was good for that, but it was the “who cares” attitude of my previous dogs toward nylon that kept me away). Both the “ribs” and “steak” (quite clever) are a bit worn on the edges now, but they look like they will be around for years. You can’t go wrong with this product (unless for some reason your dog does not like the flavor, but the flavor seems to be what draws my dogs to them). I highly recommend this (these) as the most cost-effective chew toy I’ve ever purchased.
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Reviewed in the United States on November 1, 2025