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2008 Porsche 911 997 Carrera 4S Convertible H6 3.8L

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2008 Porsche 911 997 Carrera 4S Convertible H6 3.8L Engine Emission Parts

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Pre-Catalyst Oxygen Sensor - Priced Each

ES#2021302 - 99760616801 - Pre-Catalyst Oxygen Sensor - Priced Each - Fitment before the catalyst on either side - Two required - Walker - Porsche

Fitment before the catalyst on either side - Two required

Brand:
Walker - Corporate Logo
ES#:
2021302
Mfg#:
99760616801
Ships in 1 day
$262.99

This product was last offered at the strikethrough price on
05-07-2026

$254.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Breather Hose

ES#1497949 - 99710714603 - Crankcase Breather Hose - Primary to Secondary Oil Separator; For Cylinder Bank 4-6 - Genuine Porsche - Porsche

Primary to Secondary Oil Separator; For Cylinder Bank 4-6

Brand:
Genuine Porsche - Corporate Logo
ES#:
1497949
Mfg#:
99710714603
Ships in 4 Business Days
$244.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Engine Crankcase Vent Valve

ES#4399112 - 99710703801 - Engine Crankcase Vent Valve - Keep your crankcase pressures and emissions down with a new separator - Genuine Porsche - Porsche

Keep your crankcase pressures and emissions down with a new separator

Brand:
Genuine Porsche - Corporate Logo
ES#:
4399112
Mfg#:
99710703801
Ships in 4 Business Days
$368.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Shut Off Valve - Priced Each

ES#4684842 - 94811320351 - Secondary Air Injection Shut Off Valve - Priced Each - Includes Gasket; Check valve for air pump - Vemo - Porsche

Includes Gasket; Check valve for air pump For vehicles with option code I661 "stricter emission-control concept"

Brand:
Vemo - Corporate Logo
ES#:
4684842
Mfg#:
94811320351
Special Order: No Guaranteed ETA
$135.99 USD

1/8" Barbed Vacuum Fittings - Set Of 10

Perfect for repairing and replacing cracked vacuum lines - Best used with 3mm to 4mm vacuum hoses 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5445719
Mfg#:
125DBCON
Special Order: No Guaranteed ETA
ON SALE! SAVE 59%
$12.99

This product was last offered at the strikethrough price on
03-22-2026

$5.39 USD
This product is lifetime replacement eligible Lifetime Replacement

Engine Crankcase Vent Valve

ES#3981175 - 99710713800 - Engine Crankcase Vent Valve - Keep your crankcase pressures and emissions down with a new separator - Vaico - Porsche

Keep your crankcase pressures and emissions down with a new separator We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
3981175
Mfg#:
99710713800
Special Order: No Guaranteed ETA
$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Porsche Engine Oil Separator Kit

Everything you need to carry out the oil separator service! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4871841
Mfg#:
99710703800KT1
Back Ordered
ON SALE!
$714.99

This product was last offered at the strikethrough price on
05-02-2026

$668.27 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

More About Engine Emission Parts

Repairing failed emission components doesn't just turn off the check engine light so you can pass your local emissions test, it also improves performance and fuel economy. ECS stocks all common emission controls, from oxygen sensors to PCV valves.

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Manufacturer names and/or part numbers are used only for identification purposes.

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