Belts / Tensioners / Rollers

M8 x 60 bolt for lower idler pulley. 

Fits:
Porsche 986 Boxster 2.7L 2000-04
Porsche 986 Boxster S 3.2L 2000-04

Porsche 996-1 Carrera 3.4L 1999*
Porsche 996-1 Carrera 3.4L 2000-01
Porsche 996-2 Carrera 3.6L 2002-05

Diagram ref. 14.

*NOTE: There is a VIN split for 1999 model year 996 Carrera models, and this bolt is intended for the later engine type—specifically, engines from number M66X 06241 onward (Carrera 2) or M68X 02731 onward (Carrera 4 models with electronic throttle, option code 620). If you're unsure about compatibility, feel free to contact us with your vehicle’s VIN, or measure your existing bolt to confirm fitment... 

- If it measures M8 x 60, this is the correct part.

- If it measures M8 x 55, you will need the earlier version instead.

Related reference numbers
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90037815901

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Underdrive pulley.
replacement for OE 99710224101



Fits on all Porsche 986, 996, 987, 997 models EXCEPT 2.9L (multi hole crank pulley pattern), DFI engines, GT2, GT3 and Turbo.

The RSS Harmonically Damped Underdrive Pulley is ideal for engines that are running light weight flywheels, engines that are built - bored/stroked and engines that are driven hard.

• Offers improved HP & TQ by reducing drag from the power steering pump, A/C, water pump and alternator without detrimental effects on said ancillary systems.
• Dampens/reduces internal engine harmonics for improved engine performance, efficiency and longevity.
• Recommended for street or track use

Installation tool (wrench) and new OEM Pulley Washer included:

Dyno Image shows HP & TQ gain on 2005 997.1 Carrera S:
Baseline Dyno Run Mods: OEM Crank Pulley, OEM Software, Cargraphic Headers, Hi flow 200 Cell Cats, and Medium Sound Cargraphic Sport Mufflers
Modified Dyno Run: Added RSS Pulley (Part #608) to baseline car with existing mods:
+16 HP / +8 ft lbs TQ

*** NOTE: We recommend using/sourcing a new OEM Crank Shaft Pulley Bolt for your specific vehicle when installing the RSS Pulley. (Not Included with 608 Kit)
Please add Drive Belt for Under Drive Pully cars WITH Aircon Porsche 996/ Boxster 986/997 99610215199/1

MADE IN USA

Related reference numbers
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608

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Underdrive Pulley for Porsche 996/997/Boxster 986
Replacement for OE 99610211562, 99610511563,



The RSS Lightweight High Strength Underdrive Pulley is made from 6061-T6 aluminum. A must for any street or track enthusiast

• Offers improved HP & TQ by reducing drag from the power steering pump, A/C, water pump and alternator without detrimental effects on said ancillary systems.

• Installation wrench included.

• Works on all Porsche 986, 996, 987, 997 models EXCEPT 2.9L (multi hole crank pulley pattern), 3.8L, DFI engines, GT2, GT3 and Turbo.

*** NOTE: We recommend using/sourcing a new OEM Crank Shaft Pulley Bolt for your specific vehicle when installing the RSS Pulley. (Not Included with 601 Kit)

Please read fitting instructions before purchase.


**Please note you will need a new shorter Pully Belt
99610215199/1
Under drive pulley w/ air conditioning - 2100mm

99610215198/1
Under drive pulley w/o air conditioning - 1905mm

Underderive Pulley Installation Instructions - CLICK HERE

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601

The product you are viewing cross references to these numbers

Tensioner element.



Fits:
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2006-08
Porsche 997 Carrera 2005-08

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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99710226000

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Tensioner element. Porsche 987 / 987C / 997



Fits:
Porsche 987 Boxster 2005-08
Porsche 987C Cayman 2006-08
Porsche 997 Carrera 2005-08

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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99710226000

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Lightweight Under drive Pulley is made from 6061-T6 aluminium. Offers improved HP & TQ by reducing drag from the power steering pump, A/C, water pump and alternator.

Pulley outer diameter: 123mm (measured from ribs to ribs)

Increase your engine output by reducing the draw of the engine's ancillaries ie the power steering pump, Air Conditioning, water pump and alternator by slowing them down and reducing the horsepower they use.

Underdrive pulley is one of the cheapest returns for the money spent when it comes to actual performance and horsepower gains for track and street use cars.

Installation tool (wrench) included, new OEM crankshaft pulley bolt is recommended but not included with this product.

Note: In order to accommodate the smaller diameter pulley, the timing boss on the engine case must be shortened using die grinder or similar tool (see link for instructions below).

Replacement Pulley for Original Porsche parts No. 99610211563

Fits:
Porsche 996 3.4L
Porsche 996 3.6L
Porsche 997 3.6L
Porsche Boxster 986
Porsche Boxster 987
Porsche Cayman 987C

**Please note you will need a new shorter Pully Belt which you can purchase from us.
99610215199/1
Under drive pulley w/ air conditioning - 2100mm

99610215198/1
Under drive pulley w/o air conditioning - 1905mm

Underderive Pulley Installation Instructions - CLICK HERE

Related reference numbers
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3609001601

The product you are viewing cross references to these numbers

Drive belt for cars WITH Air con.



Fits:
Porsche 996 Carrera
Porsche 986 Boxster
Porsche 997 Carrera MKI
Porsche 987 Boxster MKI
Porsche 987C Cayman MKI

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

Related reference numbers
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99610215168

The product you are viewing cross references to these numbers

Drive belt for cars WITH Air con.



Fits:
Porsche 996 Carrera
Porsche 986 Boxster
Porsche 997 Carrera MKI
Porsche 987 Boxster MKI
Porsche 987C Cayman MKI

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

Related reference numbers
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99610215168

The product you are viewing cross references to these numbers

Drive belt for cars WITH Air con.



Fits:
Porsche 996 Carrera
Porsche 986 Boxster
Porsche 997 Carrera MKI
Porsche 987 Boxster MKI
Porsche 987C Cayman MKI

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

Related reference numbers
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99610215168

The product you are viewing cross references to these numbers

Drive Belt for cars WITHOUT Air con



Fits:
Porsche 996 Carrera
Porsche 986 Boxster

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

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99610215165

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Drive belt for cars WITHOUT Air con



Fits:
Porsche 996 Carrera
Porsche 986 Boxster

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

Related reference numbers
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99610215165

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