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Control arm lower, Rear, SET OF 2. Porsche Boxster 987 / Cayman - 98733104304
98733104304/4KIT
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Information
Control arm lower, Rear.
This OE Match suspension set includes two rear lower control arms (2 × 98733104304), providing a complete left-and-right replacement for the rear axle of Porsche 987 Boxster and 987 Cayman models. These arms are engineered to replicate the geometry, strength, and bushing characteristics of the original Porsche components, ensuring precise wheel alignment, stable handling, and predictable chassis behaviour.
SET OF 2 - for left and right side.
Fits:
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012
Diagram ref no 8
This set is ideal for vehicles showing rear-end instability, knocking noises, or alignment issues caused by aged or worn control arm bushings.
• Part Numbers / Cross-References: 98733104304 (current), 98733104302 / 98733104303 (previous numbers)
• Position: Rear lower control arm / lateral link - connects rear axle assembly to chassis/subframe, controlling wheel lateral and longitudinal position under dynamic loading.
• Functions: Maintains correct wheel alignment geometry under load, ensures stable rear-end handling, helps manage camber and toe changes, absorbs suspension loads, supports consistent tyre contact and handling predictability.
The rear lower control arms maintain correct camber and toe alignment during suspension travel. They stabilise the rear axle under dynamic load and help ensure consistent tyre contact and grip. As a matched pair, they work together to deliver the balanced handling and responsiveness expected from a Porsche mid-engine chassis.
Benefits of replacing as a pair:
• Restores identical suspension behaviour on both sides
• Ensures consistent camber and toe alignment
• Eliminates uneven tyre wear caused by mismatched bushings
• Improves high-speed stability and cornering predictability
• Ideal for full rear suspension refresh or alignment correction
With time, the bushings and joints inside these arms deteriorate, causing unwanted movement, clunks, instability and poor alignment. Replacing both arms ensures complete restoration of rear suspension accuracy, improving handling sharpness, road feel and overall safety.
When to Replace:
• Knocking or clunking noises from the rear over bumps
• Excessive play in rear suspension arms during inspection
• Uneven or premature rear tyre wear
• Alignment cannot be maintained (camber/toe constantly shifting)
• Rear-end feels unstable during cornering or acceleration
• Performing a full suspension overhaul
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98733104304
The product you are viewing cross references to these numbers
This OE Match suspension set includes two rear lower control arms (2 × 98733104304), providing a complete left-and-right replacement for the rear axle of Porsche 987 Boxster and 987 Cayman models. These arms are engineered to replicate the geometry, strength, and bushing characteristics of the original Porsche components, ensuring precise wheel alignment, stable handling, and predictable chassis behaviour.
SET OF 2 - for left and right side.
Fits:
Porsche 987.1 Boxster 2005 - 2008
Porsche 987.2 Boxster 2009 - 2012
Porsche 987C.1 Cayman 2005 - 2008
Porsche 987C.2 Cayman 2009 - 2012
Diagram ref no 8
This set is ideal for vehicles showing rear-end instability, knocking noises, or alignment issues caused by aged or worn control arm bushings.
• Part Numbers / Cross-References: 98733104304 (current), 98733104302 / 98733104303 (previous numbers)
• Position: Rear lower control arm / lateral link - connects rear axle assembly to chassis/subframe, controlling wheel lateral and longitudinal position under dynamic loading.
• Functions: Maintains correct wheel alignment geometry under load, ensures stable rear-end handling, helps manage camber and toe changes, absorbs suspension loads, supports consistent tyre contact and handling predictability.
The rear lower control arms maintain correct camber and toe alignment during suspension travel. They stabilise the rear axle under dynamic load and help ensure consistent tyre contact and grip. As a matched pair, they work together to deliver the balanced handling and responsiveness expected from a Porsche mid-engine chassis.
Benefits of replacing as a pair:
• Restores identical suspension behaviour on both sides
• Ensures consistent camber and toe alignment
• Eliminates uneven tyre wear caused by mismatched bushings
• Improves high-speed stability and cornering predictability
• Ideal for full rear suspension refresh or alignment correction
With time, the bushings and joints inside these arms deteriorate, causing unwanted movement, clunks, instability and poor alignment. Replacing both arms ensures complete restoration of rear suspension accuracy, improving handling sharpness, road feel and overall safety.
When to Replace:
• Knocking or clunking noises from the rear over bumps
• Excessive play in rear suspension arms during inspection
• Uneven or premature rear tyre wear
• Alignment cannot be maintained (camber/toe constantly shifting)
• Rear-end feels unstable during cornering or acceleration
• Performing a full suspension overhaul
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98733104304
98733104302
98733104303
98733104304
98733114302
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
2 x Control arm lower, Rear. Porsche Boxster 987 / Cayman (98733104304/4
Price: €221.26
In stock
Related products
Vehicle Group
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
Information
RSS Tarmac series adjustable rear toe steer kit.
SET OF 2 Replacement for 98133104580
Fits:
Porsche 981 Cayman GT4 3.8L 2015 - 2017
The RSS Adjustable Rear Toe Steer Kit is designed for Porsche GT4 models that have been lowered or have aggressive negative camber settings.
This kit will help minimize the suspension geometry change in the REAR of the vehicle.
Allows for toe adjustment at the toe steer arm giving the ability to make adjustments independent of the factory eccentric bolts which may not offer sufficient adjustment.
Greatly improves handling and feedback.
Eliminates rubber bushing deflection.
For off road use only.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
302
The product you are viewing cross references to these numbers
SET OF 2 Replacement for 98133104580
Fits:
Porsche 981 Cayman GT4 3.8L 2015 - 2017
The RSS Adjustable Rear Toe Steer Kit is designed for Porsche GT4 models that have been lowered or have aggressive negative camber settings.
This kit will help minimize the suspension geometry change in the REAR of the vehicle.
Allows for toe adjustment at the toe steer arm giving the ability to make adjustments independent of the factory eccentric bolts which may not offer sufficient adjustment.
Greatly improves handling and feedback.
Eliminates rubber bushing deflection.
For off road use only.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
302
302
98133104580
The product you are viewing cross references to these numbers
Price: €555.78
In stock
Information
Rear control arm hexagon head bolt, M 14 X 100.
Designed for the rear axle control arm on Porsche 996 and 997, it provides exact factory fit, strength, and corrosion resistance.
Sold each.
Fits:
Porsche 996 1998 - 2005
Porsche 997.1 2005 - 2008
Porsche 997.2 2009 - 2012
Diagram ref no 18
Thread size / spec: M14 × 1.5 × 100 mm
Supersession: Part 90037805109 is superseded by 90037805101
This bolt secures the rear suspension control arm to the wheel carrier or subframe, providing the clamping force needed to maintain accurate suspension alignment and minimize movement under load.
Over years of service, high torque loads, vibration, and exposure to road conditions can weaken or corrode suspension bolts. A compromised bolt may lead to improper alignment, handling instability, or noise under braking and cornering.
When to replaces:
• During control arm replacement, alignment service, or rear suspension rebuilds
• If original bolts show corrosion, stretching, or thread wear
• As part of preventive maintenance when reassembling load-bearing suspension joints
Replacing with Genuine Porsche hardware ensures structural integrity, precise fit, and lasting performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90037805101
The product you are viewing cross references to these numbers
Designed for the rear axle control arm on Porsche 996 and 997, it provides exact factory fit, strength, and corrosion resistance.
Sold each.
Fits:
Porsche 996 1998 - 2005
Porsche 997.1 2005 - 2008
Porsche 997.2 2009 - 2012
Diagram ref no 18
Thread size / spec: M14 × 1.5 × 100 mm
Supersession: Part 90037805109 is superseded by 90037805101
This bolt secures the rear suspension control arm to the wheel carrier or subframe, providing the clamping force needed to maintain accurate suspension alignment and minimize movement under load.
Over years of service, high torque loads, vibration, and exposure to road conditions can weaken or corrode suspension bolts. A compromised bolt may lead to improper alignment, handling instability, or noise under braking and cornering.
When to replaces:
• During control arm replacement, alignment service, or rear suspension rebuilds
• If original bolts show corrosion, stretching, or thread wear
• As part of preventive maintenance when reassembling load-bearing suspension joints
Replacing with Genuine Porsche hardware ensures structural integrity, precise fit, and lasting performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90037805101
90037805101
90037805109
The product you are viewing cross references to these numbers
Price: €19.09
In stock
Vehicle Group
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Information
Eccentric screw for rear control arm
M 12 x 1.5 x 100mm
Fits:
Porsche 981 Boxster 2012 - 2016
Porsche 981C Cayman 2014 - 2016
Porsche 982 Boxster 2017 - 2024
Porsche 982C Cayman 2017 - 2024
Porsche 997.2 Turbo / GT3
Porsche Cayman GT4.1 2016
Porsche Cayman GT4.2 2019 - 2024
Porsche 981 Boxster Spyder 2016
Porsche 982 Boxster Spyder 2019 - 2024
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733121703
The product you are viewing cross references to these numbers
M 12 x 1.5 x 100mm
Fits:
Porsche 981 Boxster 2012 - 2016
Porsche 981C Cayman 2014 - 2016
Porsche 982 Boxster 2017 - 2024
Porsche 982C Cayman 2017 - 2024
Porsche 997.2 Turbo / GT3
Porsche Cayman GT4.1 2016
Porsche Cayman GT4.2 2019 - 2024
Porsche 981 Boxster Spyder 2016
Porsche 982 Boxster Spyder 2019 - 2024
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99733121703
99733121703
The product you are viewing cross references to these numbers
Price: €15.29
In stock