GM 12561211 O-ring for CAM or CRANK POSITION SENSOR 1999-2007 12555566 12560228

$10.99 Buy It Now or Best Offer
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Seller Store idakiteman
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Location: Boise, Idaho
Ships to: US,
Item: 174255764697

Returns Accepted:ReturnsNotAccepted
Other Part Number:12561211 213-363 12555566 12560228 213-354
Fitment Type:Direct Replacement
Manufacturer Part Number:12561211
Category 3:Powertrain Control
Quantity:1
Category 2:Powertrain Control
GM:GM
Item Name:Camshaft Position Sensor
Type:Ignition Kit
Interchange Part Number:12561211 213-363 12555566 12560228 213-354
Category 1:Electrical
Manufacturer Warranty:Unspecified Length
Alternate Item Name:Crank Position Sensor
Fitment Footnotes:Incl.seal;Vendor;
SKU:300:12561211
Quantity Needed:1

DON’T REPLACE YOUR WORKING SENSOR WITH A NEW ONE JUST BECAUSE IT LEAKS OIL. SAVE $$ BY REPLACING JUST ITS O-RING. READ THIS ENTIRE DESCRIPTION…YOU’LL BE GLAD YOU DID. (I’m sorry. EBay just raised fees AGAIN and I had to raise the price by 15 cents to offset their increased take. Realize that in the 45 US States that charge sales tax, 20-32.5% of what you pay goes to eBay fees and sales tax.) REUSE YOUR HI QUALITY LONG-LIFE GM / AC DELCO / DELPHI original OEM sensor. DON’T THROW IT AWAY (they’re expensive) and replace it with aftermarket junk sensors that don’t last because you can’t find a new AC Delco/Delphi sensor (or don’t want to pay their premium price). GM supply chains are badly broken by covid and OEM spare part sensors are in short supply. RockAuto doesn’t have ACD spares, nor 1A or others. Don’t do the job twice (and suffer all the agonizing consequences) because you threw away your leaky but working hi-quality OEM sensor and replaced it with a cheap aftermarket part. This is a BRAND NEW, SPECIALTY SIZE & MATERIAL O-RING fitting both the Camshaft and Crankshaft Position Sensors for GM “LS” engines: 4.8L 5.3L 5.7L & 6.0L engines 1997-2009 (see picture for more details)[fits 5.7L LS1 engine, not the older 5.7L LT1 which has coolant flow through the intake mainfold]. They may fit other GM engines & years too…look at the GM and AC Delco part #’s shown in the picture for the GM / ACD sensor part #’s these rings fit. Original GM sensor parts rarely failEXCEPT FOR for aggravating OIL LEAKAGE which is extremely common. These two sensors are the most frequent causes of oil dripping on your driveway. If you see oil drips on the bottom of the starter motor (especially the starter motor bolts) thats from a leaky crank sensor. If you see oil dripping between engine and tranny or coming off the end edge of the bell housing (or open the bell housing view shield and look for or swipe your finger and detect engine oil), thats most likely from a leaky camshaft sensor (don’t despair…odds are it’s not from the rear main seal…I learned this the hard way…I went after the rear main seal only to see, after pulling the engine, the leak was from the darn cam sensor…the lesson: it’s hugely cheaper & faster & easier to first try replacing these o-rings to see if they fix the leaks). These sensors leak oil because their O-rings deform and flatten, causing seal failure. The O-rings the factory used most often, that are ALL prone to this failure, areBLUE. They are a softer material than these brown rings (durometer 70 instead of 75). Also, the cord dimension (thickness) of the blue rings is .01″ thinnner than these brown rings making their diameter .02″ smaller (these numbers taken from o-ring manufacturer specs). Because the blue ones are softer and slightly too small, they fail routinely and early. It’s why every GM 4.8L, 5.3L, 5.7L and 6.0L LS engine starts leaking oil out these sensors early in life. The factory used the blue ones likely because they are cheaper. The slightly harder material of these brown rings, plus their slightly larger dimensions (along with superior temperature tolerant material), combine to give a much better, tighter, longer lasting seal. You can feel the difference when you install it. Now you could just buy a whole new real cheap aftermarket sensor…BUT…These sensors are difficult to get to, and to avoid doing the whole repair over again let me warn: run away from cheap AFTERMARKET (non-GM/ACD/Delphi) parts.Just as with GM knock sensors, GM PCUs are very sensitive to electrical signal characteristics coming from these shaft sensors. Ever do the troublesome knock sensor replacement using aftermarket sensors, only to have them trigger your check-engine light the first time you drive on them? Happens almost every time aftermarket sensors are used. Big troublesome job you get to do all over again. Well, MANY cheap aftermarket CAM/CRANK sensors will trigger the Check Engine Light the same way.Read the eBay reviews of cheap aftermarket sensors.Read some of the product reviews on these o-ring ads I’ve placed and you’ll see folks who suffered this exact experience, and you’ll see posts from experienced mechanics testifying how darn “picky” LS engines are about all sensors associated with ignition timing (cam, crank, knock). Unless you’re OK with a high probability of doing the whole troublesome job over again, its best to use original GM or AC Delco or Delphi sensors, which are MUCH MORE EXPENSIVE than aftermarket….because: 1) they work, and 2) they’re MUCH higher quality and last FAR longer. But if your sensors are good other than leaking, its cheaper by-far, with a more reliable outcome, to simply reuse your high quality OEM sensorsand just replace their O-rings with these higher quality, better fitting brown rings. Its aggravating GM DIDNT SETUP A PART# for this O-ring. They must want you to buy entire sensors. GM doesnt offer (nor does anyone else) a replacement 0-ring. And to make matters more difficult, GM used a NON-STANDARD SPECIALTY SIZE 0-RING. O-ring sizes are universally defined by a standardized DASH specification, but no standard DASH size in that spec will fit these sensors. If you mistakenly try using the closest standard DASH size (the size you may read about on the internet), your engine will leak like JULIAN ASSANGE. And on top of the frustrating difficulty of finding the proper size, theres also the difficulty of finding a reliable material thats both high-temperature and oil tolerant. These O-rings are a perfect fit and materialGUARANTEED. If only one of your sensors is leaking, the other isn’t far behind, so it’s best to buy two (see my other eBay ads for a pair of these o-rings at slightly cheaper price-per-ring, item #’s:173910743201 and173974101288 [BEAWAREeBayAGAINjust raised their fee rate to 13.25% (from 12.9%),andon March 15. 2024 are raising their per-order fee from $0.30 to $0,40, For a $10 item, $0.40 is 4%, soeBay’s total fees are AT LEAST17.25%for low priced items like this. AND….less known too is thatthey also apply their 13.25% fee rate to any/all sales tax they collect from you. Rolling all this up, in 45 US states that have sales tax,the result is that for low priced items like this, eBay’s “take” ends up between18%-19%of the total (item + ship) cost.Also realize, State + local sales taxes range from 2-13.5% among the 45 US States that charge sales tax. So in those states,20-32.5% of what you pay goes for Ebay fees and taxes. Thank you.]

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