What is the purpose and functionality of the front seat belt tensioner system on Audi A3?

Each model comes with a front seat belt tensioner system built into each inertia reel, the rear seat belt inertia reel with the tensioner system fitted are only available in certain models with others having standard inertia reels. This system aims at removing any slack in the seat belt within seconds in case of a sudden frontal impact, thus reducing the chances of injury of front seat occupants. The tensioner is activated due to an impact which is in the front and which is of a certain force and the other impacts such as those caused by a rear impact do not activate the system. The explosive gas at the tensioner mechanism ensures the seat belt is locked in place when activated and this way the occupant is held firmly in place in the seat. When activated, the seat belt is permanently locked, and the assembly will have to be replaced. An individual should be careful because of the possibility of personal injury in case the system is switched on accidentally during the maintenance of the vehicle, and it is highly recommendable to leave any task that involves the seat belt inertia reel to be carried out by Audi dealer.

What should be checked for damage and wear in seat belts, and How to verify the seat belt reminder light on Audi A4?

Check seat belts, buckles, latch plates and guide loops to look at obvious damage and signs of wear. Make sure that the bolts that hold the seat belt receptacle on the vehicle floor are tight. Test to ensure that there is a seat belt reminder light that goes on when the key is turned to run or start position.

Genuine Audi Seat Belt

Seat Safety Belt

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735 Seat Belts found

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Audi Center Seat Belt Part Number: 8D0-857-713-D-45E
$96.39 MSRP: $135.00
You Save: $38.61 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Lap Belt
- Position: Right
Fits the following Audi Models:
- A4 | 2000-2001 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 2000-2001 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- S4 | 2000-2002 | Avant, Base | 6 Cyl 2.7 L GAS
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Audi Center Seat Belt Part Number: 8D0-857-713-D-6PT
$96.39 MSRP: $135.00
You Save: $38.61 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt
- Position: Right
Fits the following Audi Models:
- A4 | 2000-2001 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 2000-2001 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- S4 | 2000-2002 | Avant, Base | 6 Cyl 2.7 L GAS
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Audi Center Seat Belt Part Number: 8D0-857-713-D-Q44
$112.81 MSRP: $158.00
You Save: $45.19 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt
- Position: Right
Fits the following Audi Models:
- A4 | 2000-2001 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 2000-2001 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- S4 | 2000-2002 | Avant, Base | 6 Cyl 2.7 L GAS
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Audi Center Seat Belt Part Number: 8D0-857-713-D-V04
$112.81 MSRP: $158.00
You Save: $45.19 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt
- Position: Right
Fits the following Audi Models:
- A4 | 2000-2001 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 2000-2001 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- S4 | 2000-2002 | Avant, Base | 6 Cyl 2.7 L GAS
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Audi Rear Belt Assembly Part Number: 4D0-857-703-C-Q44
$114.24 MSRP: $160.00
You Save: $45.76 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Lap Belt
- Position: Rear
Fits the following Audi Models:
- A8 | 1997 | Base | 8 Cyl 3.7 L GAS
- A8 Quattro | 1997 | Base | 8 Cyl 4.2 L GAS
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Audi Rear Belt Assembly Part Number: 4D0-857-703-C-U24
$114.24 MSRP: $160.00
You Save: $45.76 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Lap Belt
- Position: Rear
Fits the following Audi Models:
- A8 | 1998-1999 | Base | 8 Cyl 3.7 L GAS
- A8 Quattro | 1998-1999 | Base | 8 Cyl 4.2 L GAS
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Audi Rear Belt Assembly Part Number: 4D0-857-703-D-U24
$114.24 MSRP: $160.00
You Save: $45.76 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt
- Position: Rear
Fits the following Audi Models:
- A8 | 1998-1999 | Base | 8 Cyl 3.7 L GAS
- A8 Quattro | 1998-1999 | Base | 8 Cyl 4.2 L GAS
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Audi Rear Belt Assembly Part Number: 4D0-857-703-C-V04
$132.09 MSRP: $185.00
You Save: $52.91 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt
- Position: Rear
Fits the following Audi Models:
- A8 | 1997 | Base | 8 Cyl 3.7 L GAS
- A8 Quattro | 1997 | Base | 8 Cyl 4.2 L GAS
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Audi Center Seat Belt Part Number: 8D0-857-703-B-45E
$142.80 MSRP: $200.00
You Save: $57.20 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt
- Position: Left
Fits the following Audi Models:
- A4 | 2000-2001 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 2000-2001 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- S4 | 2000-2002 | Avant, Base | 6 Cyl 2.7 L GAS
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Audi Lap & Shoulder Belt Part Number: 8D0-857-703-B-9SV
$142.80 MSRP: $200.00
You Save: $57.20 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt; Lap & Shoulder Belt
- Position: Center
Fits the following Audi Models:
- A4 | 1998-1999 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 1998-1999 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
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Audi Lap & Shoulder Belt Part Number: 4A5-857-709-J-V04
$143.51 MSRP: $201.00
You Save: $57.49 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seat Belt; Lap & Shoulder Belt, Outer Belt Assembly
- Position: Rear
Fits the following Audi Models:
- 100 | 1992-1994 | Base, CS, S | 6 Cyl 2.8 L GAS
- A4 | 1996-1997 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 1996-1997 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A6 | 1995-1997 | Base | 6 Cyl 2.8 L GAS
- A6 Quattro | 1995-1997 | Base | 6 Cyl 2.8 L GAS
- S4 | 1992-1994 | Base | 5 Cyl 2.2 L GAS
- S6 | 1995 | Avant, Base | 5 Cyl 2.2 L GAS
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Audi Rear Belt Assembly Part Number: 4D0-857-703-D-V04
$143.51 MSRP: $201.00
You Save: $57.49 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt
- Position: Rear
Fits the following Audi Models:
- A8 | 1998-1999 | Base | 8 Cyl 3.7 L GAS
- A8 Quattro | 1998-1999 | Base | 8 Cyl 4.2 L GAS
View related parts
Audi Center Seat Belt Part Number: 8D0-857-703-B-6PT
$143.51 MSRP: $201.00
You Save: $57.49 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt
- Position: Left
Fits the following Audi Models:
- A4 | 1998-2001 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 1998-2001 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- S4 | 2000-2002 | Avant, Base | 6 Cyl 2.7 L GAS
View More
View related parts
Audi Center Seat Belt Part Number: 8D0-857-703-B-Q44
$143.51 MSRP: $201.00
You Save: $57.49 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt
- Position: Left
Fits the following Audi Models:
- A4 | 1998-2002 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- A4 Quattro | 1998-2002 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- S4 | 2000-2002 | Avant, Base | 6 Cyl 2.7 L GAS
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Audi Rear Belt Assembly Part Number: 4D0-857-703-D-F64
$149.44 MSRP: $209.30
You Save: $59.86 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt
- Position: Rear
Fits the following Audi Models:
- A8 | 1998-1999 | Base | 8 Cyl 3.7 L GAS
- A8 Quattro | 1998-1999 | Base | 8 Cyl 4.2 L GAS
View related parts
Audi Lap & Shoulder Belt Part Number: 4L0-857-811-A-TPT
$160.65 MSRP: $225.00
You Save: $64.35 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seat Belt; Lap & Shoulder Belt
Fits the following Audi Models:
- Q7 | 2007 | Base, Premium | 6 Cyl 3.6 L GAS, 8 Cyl 4.2 L GAS
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Audi Lap & Shoulder Belt Part Number: 4L0-857-811-A-TPU
$160.65 MSRP: $225.00
You Save: $64.35 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seat Belt; Lap & Shoulder Belt
Fits the following Audi Models:
- Q7 | 2007 | Base, Premium | 6 Cyl 3.6 L GAS, 8 Cyl 4.2 L GAS
View related parts
Audi Lap & Shoulder Belt Part Number: 4L0-857-811-A-V04
$160.65 MSRP: $225.00
You Save: $64.35 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seat Belt; Lap & Shoulder Belt
Fits the following Audi Models:
- Q7 | 2007 | Base, Premium | 6 Cyl 3.6 L GAS, 8 Cyl 4.2 L GAS
View related parts
Audi Lap & Shoulder Belt Part Number: 8D0-857-703-B-5SH
$162.19 MSRP: $227.15
You Save: $64.96 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt; Lap & Shoulder Belt
- Position: Center
Fits the following Audi Models:
- A4 | 1998-1999 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 1998-1999 | Avant, Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
View related parts
Audi Center Seat Belt Part Number: 8D0-857-703-V04
$162.19 MSRP: $227.15
You Save: $64.96 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Lap Belt
- Position: Center
Fits the following Audi Models:
- A4 | 1996-1997 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS
- A4 Quattro | 1996-1997 | Base | 4 Cyl 1.8 L GAS, 6 Cyl 2.8 L GAS

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Audi Seat Belt

The Audi Seat Belt is a very important part of your vehicle. Therefore, it has to be maintained in good condition to avoid performance issues and comfortable driving. And these regular checks and replacements will ultimately save you some big repair costs. It is better to choose OEM parts when it comes to the time for fixing them. Why? Because they fit perfectly well and ensure safety. For people who prefer doing their maintenance, the genuine Audi Seat Belt is quite perfect. At AudiPartsGiant.com, we specialize in genuine Audi Seat Belts only. Also, we offer an extensive online catalog with many categories, ample stock, and secure shopping. The Audi Seat Belt is shipped directly from authorized Audi dealers at competitive prices. So trust us, and we will give you nothing but superior service. Depend on us for all your genuine parts needs, and then we will keep your automobile moving smoothly.

Audi Seat Belt Parts and Q&A

Lap & Shoulder Belt
8P0-857-807-K-RMS
Q: What is the purpose and functionality of the front seat belt tensioner system on Audi A3?
A:
Each model comes with a front seat belt tensioner system built into each inertia reel, the rear seat belt inertia reel with the tensioner system fitted are only available in certain models with others having standard inertia reels. This system aims at removing any slack in the seat belt within seconds in case of a sudden frontal impact, thus reducing the chances of injury of front seat occupants. The tensioner is activated due to an impact which is in the front and which is of a certain force and the other impacts such as those caused by a rear impact do not activate the system. The explosive gas at the tensioner mechanism ensures the seat belt is locked in place when activated and this way the occupant is held firmly in place in the seat. When activated, the seat belt is permanently locked, and the assembly will have to be replaced. An individual should be careful because of the possibility of personal injury in case the system is switched on accidentally during the maintenance of the vehicle, and it is highly recommendable to leave any task that involves the seat belt inertia reel to be carried out by Audi dealer.
Center Seat Belt
8D0-857-703-B-Q44
Q: What should be checked for damage and wear in seat belts, and How to verify the seat belt reminder light on Audi A4?
A:
Check seat belts, buckles, latch plates and guide loops to look at obvious damage and signs of wear. Make sure that the bolts that hold the seat belt receptacle on the vehicle floor are tight. Test to ensure that there is a seat belt reminder light that goes on when the key is turned to run or start position.