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Searched but didn't find exactly what I was looking for, despite quite a few O2 sensor threads.
I need p/n 993-606-126-01 Buy OEM from Porsche ($250-ish) or Bosch OE ($75-ish)? $s difference is significant enough to make it not a no-brainer (sorry for the double-negative), to consider alternatives beside the dealer. Comments from firsthand experience w.r.t. fit and function of the Bosch OE part would be greatly appreciated.
Also, any special tools required to R&R the O2 sensor on a '95? Surprised O2 replacement didn't merit a DIY - either trivially easy or ??? [Edit: found this thread which confirms that this is an easy DIY]
Bosch makes the one for Porsche, the only difference is the box it comes in. Save yourself some money. Don't get a "universal fit" sensor where you have to cut/splice the wires--that is asking for trouble. Correct part for the 95 is 993-606-126-01.
Not difficult to install. It helps to use some penetrating oil where the sensor screws into its bung and let it soak for a while. Just pay attention to how the wiring is run when you take out the old one, and route the new one the same. Any grommets are already slit, so no need to cut anything. You might need a special socket, slotted 22mm made for this purpose, but some owners use an open-end 22mm.
What was your indication that an Oxygen Sensor needed to be replaced?
The Bosch branded product is identical to the Porsche branded part as Bosch is the OE factory supplier and makes the Service New Replacement part for Porsche.
The easiest way to remove oxygen sensors is to use a little penetrating oil on the bung (mount) threads, let them sit overnight, cut the wires to them and slip a closed-end boxed end wrench over each sensor and tap it lose. After the new ones are fully screwed in, using care not to twist its wire pigtail use the old wires to fish the new wire up to their plugs in the engine compartment matching the plug color black or grey to the same color socket on each side of the engine bay. It helps to pull the sheet metal pass -through rubber grommets in the engine tin first. They are easy to put back in position once the wiring is all in place.
In this way you will avoid twisting the wire and damaging the vent tube that is inside the wire sheath. If the vent tube gets crimped or twisted shut the oxygen sensor will not work properly.
What was your indication that an Oxygen Sensor needed to be replaced?
The Bosch branded product is identical to the Porsche branded part as Bosch is the OE factory supplier and makes the Service New Replacement part for Porsche.
The easiest way to remove oxygen sensors is to use a little penetrating oil on the bung (mount) threads, let them sit overnight, cut the wires to them and slip a closed-end boxed end wrench over each sensor and tap it lose. After the new ones are fully screwed in, using care not to twist its wire pigtail use the old wires to fish the new wire up to their plugs in the engine compartment matching the plug color black or grey to the same color socket on each side of the engine bay. It helps to pull the sheet metal pass -through rubber grommets in the engine tin first. They are easy to put back in position once the wiring is all in place.
In this way you will avoid twisting the wire and damaging the vent tube that is inside the wire sheath. If the vent tube gets crimped or twisted shut the oxygen sensor will not work properly.
Andy
Andy, the CEL comes on intermittently. Using the instructions provided by BobbyT I determined it was code 24, which is a malfunctioning Oxygen Sensor according to the info provided in BobbyT's post.
How about Rock Auto? I am considering replacement. I have not bought yrt but they offer the Bosch factory 02 for our cars.
Hoping there is no cutting and splicing.
Anyone purchase from Rock Auto? FeedbacK?
Thanks TJ
The thing to keep in mind re replacement O sensors is that the reference air needed to evaluate exhaust gas comes in through the wire harness. oe or Bosch as long as the wire harness is the same as oe is the only way to go
I am looking for a Plug n Play solution. Rock Auto lists these O2 sensors for the 95 and 97 993 Heading - Exhaust & Emissions
BOSCH13721Actual OE Oxygen Sensor; Heated; Wires: 4; Length (in): 33.Upstream $74.79 x 2 My 97 Front Sensor Pre-Cat Bosch LSH25 Bosch Part # 0 258 003 721 PORSCHE PART # 993 606 116 01 993-606-116-01 LSH 25 Bosch # 0 003 258 721
Rock Auto recommends: BOSCH 13723 Actual OE Oxygen Sensor; Heated; Wires: 4; Length (in): 27.2 Info $76.79 x 2 for the rear or described as "Downstream" on their site.
Found this here on RLK - the OEM part number can be cross referenced in the Bosch database the BOSCH and the Porsche part number are etched on the barrel of the service new replacement part with the proper wire length and connector.?Where is this? I see Bosch Part # 0 258 003 721stated within here:https://rennlist.com/forums/993-foru...ithin-pet.htmlInfo provided by Andy - Can you help out with confirmation here Andy? Or anyone else who knows? / or the OP mr_bock?This helps OP and myself and other I figure.This is why I asked has anyone used these? At this price seems good to go.Thanks y'all TGreen Green Green!!J
Last edited by TJ993; Apr 25, 2019 at 02:44 PM.
Reason: addl info
I just finished replacing my Oxygen Sensor. I bought the Bosch sensor from FCP Euro for $75 - my part number for a '95 OBD1 car was BOS-13369. The fit was identical to the old factory sensor. I laid both next to each other to compare; both harnesses were the same length and both connectors were identical.
Oxygen Sensor
