do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
- Accessories
- Brakes
- Chassis / Bodywork
- Clothing & Gifts
- Electrical & Relays
- Engine Cooling
- Engine Electrical
- Engine Rebuild Parts
- Engine Tuning
- Exhausts
- Exterior Styling / Spoilers
- Gearbox / Transmission
- Heating / Air Conditioning
- Hydraulics
- Incar / Multimedia
- Interior & Accessories
- Lighting
- Mats & Carpets
- Motorsport and Off-Road
- Parts for Other Cars
- Pedal Cluster
- Rubber Seals
- Seats & Seat Belts
- Service Parts
- Special Offer Parts
- Steering Parts
- Suspension & Axle
- Suspension Upgrades
- Tyres
- Wheel Accessories
- Wheels
Breather line Genuine Porsche part 9A111006146
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
- We are unable to provide fitting details for this product at this time. Please contact us for further information.

The DFI Porsche engine package is a finely tuned performance machine and additional power has proved difficult to find. The unique design of Porsche's new DFI intake system posed very challenging tuning hurdles but once again IPD developed a design that out performs the factory intake system without compromising reliability and drive-ability.
This innovative and revolutionary IPD DFI Intake Plenum employs the patented "Y" design as well as an enlarged plenum area that allows for improved intake air speed and velocity resulting in performance increases without any loses in power.
The all new specifically designed IPD 3.8L DFI intake Plenum is a direct bolt-on upgrade that replaces the factory air intake distributor and utilizes all pre-existing factory hardware and throttle body.
The improved IPD intake design allows for smoother, less turbulent and more efficient air flow resulting in impressive power and torque gains for Porsche driving enthusiasts.
The superior design of the DFI IPD Plenum provides an additional 15 horsepower at the wheels. Unlike previous naturally aspirated IPD plenums that delivered stronger gains in the mid range, the new IPD DFI Plenums deliver a similar shaped power curve as the factory but are considerably stronger from the mid range to redline without any loses in power down low.
Installation of the new IPD 3.8L DFI Plenum is relatively straight forward and can be installed by mechanically inclined DIY customers although IPD strongly recommends installation be performed by a trained and qualified Porsche technician.
Fits:
Porsche 997 GEN2 3.8L S
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
97482-3.8
The product you are viewing cross references to these numbers
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12

The IPD 987.2 Boxster "Competition" Plenum was designed to meet the needs of the most demanding Boxster S enthusiasts. The "Competition" Plenums is internally larger and specifically designed to utilized the larger 82mm 997 GT3 throttle body. This new 987.2 Competition Plenum follows in the foot steps of the very successful 987.1 Competition Plenum, which has proven itself to be the absolute single best performance mod that can be installed on any 987.1. The combination of the patented IPD "Y" designed Plenum and Porsche's largest TB yield great performance gains that can be seen and felt throughout the entire power band.
The "Competition" version was designed and developed to work with Boxster S's equipped with high quality high-flow aftermarket cat-back exhausts. The addition of headers and high-flow cats will only further compliment the dramatic increases with intake air flow delivered by the IPD Plenum.
Performance gains take place throughout both horsepower and torque curves but are most realized through the mid-range and well into peak power range. This system develops up to 20+ HP on Boxster already equipped with aftermarket cat-back exhausts. Once installed, the 987.2 Boxster Competition Plenum will truly transform your Porsche Boxster driving experience.
Fits:
Porsche 987 GEN2 Cayman S 3.4L DFI
Porsche 987 GEN2 Boxster S 3.4L DFI
This Plenum requires the additional purchase of the 99760511601 82mm Throttle Body
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
87482
The product you are viewing cross references to these numbers
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Cayman S / R 3.4L 987C MKII 2009-12

Fits:
Porsche 991 Carrera S DFI 3.8L
Does not fit GTS model or 991.1 Carreras equipped with upgraded X51 engine package.
The new 991 Carrera is arguably one of the sexiest Porsches to come out of Stuttgart in recent years. But like most Carreras, power output is controlled to meet a "performance target" that satisfies the masses and not the dedicated Porsche driving enthusiasts. IPD is here to scratch that proverbial performance itch for those Porsche drivers looking to elevate the already visceral Porsche driving experience to the next level.
The engine in the new 991 remains relatively unchanged from the previous 997.2 Carrera. The 991 Carrera continues to employs the 82mm throttle body just like the Carrera before it. This means there is no "Competition Plenum" available since the 82mm TB is still the largest TB available from Porsche.
Performance gains remain at 15+ horsepower at the wheels. As with most IPD Plenums, the bulk of the power gains are realized in the mid-range where they are most used and enjoyed. Unlike other mods, the IPD Plenums deliver net power gains across the entire rev range.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91482-3.8
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16

The new 991 IPD Turbo Plenum is nearly identical to the previous 997.2 Turbo Plenums. The new IPD Turbo Plenum is offered in one single 74mm version which utilizes the factory 74mm throttle body. The 991 Turbo intake manifolds are smaller than the 997.1 Turbo manifolds which is great for improved boost response and gas mileage but less than ideal for making substantial power gains. The 74mm TB provides more than adequate flow for these more restrictive intake runners eliminating the need for a larger 82mm "Competition" version.
The already explosive power of the 991 Turbo can be further increased with the new 991 Turbo IPD Intake Plenum. The patented IPD Plenum design works exceptionally well with all forced induction applications and the 991 Turbo is no exception. Power and torque increases provided by the IPD plenum are impressive and stay well above all factory power curves from launch to redline. Maximum power increases take place in the midrange where it's most needed, most critical and most enjoyed.
The 991 Turbo plenums deliver smooth and linear power with considerably quicker boost response creating a longer and more desirable power band. The Turbo plenums deliver reliable performance for both street and motorsport applications enhancing the already visceral Porsche Turbo driving experience.
The 991 Turbo requires an "adaptation" period that can be fully realized with either a series of hard pulls on the dyno or a series of spirited driving sessions, which of course IPD recommends only be performed on a closed course circuit. Installation of all Turbo Plenums is highly recommended to be performed by qualified and trained Porsche technicians.
Fits:
Porsche 991.1 Turbo
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91274
The product you are viewing cross references to these numbers
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560Bhp) 2014-16
IPD Aluminum Intake Plenum.

Porsche 991 Carrera DFI 3.4L
The new 991 Carrera is arguably one of the sexiest Porsches to come out of Stuttgart in recent years. But like most Carreras, power output is controlled to meet a "performance target" that satisfies the masses and not the dedicated Porsche driving enthusiasts. IPD is here to scratch that proverbial performance itch for those Porsche drivers looking to elevate the already visceral Porsche driving experience to the next level.
The engine in the new 991 remains relatively unchanged from the previous 997.2 Carrera. The 991 Carrera continues to employs the 82mm throttle body just like the Carrera before it. This means there is no "Competition Plenum" available since the 82mm TB is still the largest TB available from Porsche.
Performance gains remain at 14+ horsepower at the wheels. As with most IPD Plenums, the bulk of the power gains are realized in the mid-range where they are most used and enjoyed. Unlike other mods, the IPD Plenums deliver net power gains across the entire rev range.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91482-3.4
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
It’s a vacuum pump that generates and supplies vacuum pressure to the brake booster (servo), helping amplify the driver’s brake pedal force. Without its assistance, braking becomes harder and less responsive.
Fits:
Porsche 987.2 Boxster 2009 - 2012
Porsche 981 Boxster 2012 - 2016
Porsche 987C.2 Cayman 2009 - 2012
Porsche 981C Cayman 2014 - 2016
Porsche 997.2 2009 - 2012
Porsche 997.2 Turbo / Turbo S 2010 - 2013
Porsche 991.1 2012 - 2016
Porsche 991.1 Turbo 2014 - 2017
Diagram ref no 10
The pump connects between the engine and the brake booster, often located in the engine bay near the intake or accessory mounting area.
What this pump does:
• Creates vacuum for the brake booster so less pedal effort is required
• Maintains consistent vacuum under engine load and conditions to support stable braking
• Ensures the brake servo has the suction needed for efficient braking response
A failing vacuum pump reduces or loses the vacuum needed by the brake booster, leading to a hard, heavy brake pedal and reduced braking assist If it leaks, cracks, or loses suction over time, braking performance and safety degrade. Replacing it with a genuine unit ensures proper vacuum levels, restoring smooth, efficient braking and maintaining safety and reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111009008
The product you are viewing cross references to these numbers
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520bhp) 2014-16
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16

Fits:
Porsche 991 3.8L MKI 2012-16
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111002101
The product you are viewing cross references to these numbers
- Porsche 991.1 Carrera C2S 3.8L (400Bhp) 2012-16
- Porsche 991.1 Carrera C4S 3.8L (400Bhp) 2012-16
Fits:
Porsche 991.2 Turbo /S
Porsche GT2 RS
IPD took delivery of its 991.2 Turbo S and the R & D started the second it arrived at its new home. The new Turbo doesn't substantially benefit from any one particular upgrade, but the sum of its improvements deliver a superior overall Turbo compared to the already impressive 991.1 Turbo it replaces. Yes, we know the latest Turbo is faster with 20 more horsepower but it's the combination of lightening shifts, razor sharp handling and spiritual connection to the vehicle that elevates the driving experience of the extraordinary new 991.2 Turbo.
Porsche made a number of substantial upgrades with the latest 991.2 Turbo. Engine improvements include revised intake ports, larger injectors, higher volume fuel pump, larger turbo compressor wheels and more efficient intercoolers, but the factory intake system remained relatively unchanged allowing the IPD Plenum and Y-Pipe to fit with only minor modifications.
The 991.2 Turbo Plenum upgrade delivers staggering engine power and torque gains that will raise the performance bar of the already potent supercar as well as the hairs on your neck. Horsepower gains are found throughout the entire power band with the bulk of the gains being realized between the 3500-5000 RPM range. Max power gains of 45+ wheel HP come in at 4300 RPM and hold strong all the way to redline. Torque is even more impressive at 60+ in the midrange with a massive torque gains from 3500-5000 RPM.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91274.2
The product you are viewing cross references to these numbers
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19

Fits:
Porsche 997.2 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A111009102
The product you are viewing cross references to these numbers
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed