Question about OEM wiper arms - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**71CHEVYSHORTBED402** · Yesterday, 01:34 PM

Pretty sure these are OEM. Not sure who made them, perhaps Trico. I'm wondering what the head, or spindle nut for lacking a better term is made and finished???? All I know is the coating is durable. Perhaps anodized?

GM parts were so great right? 140K on these parts, less the rubber.

**71CHEVYSHORTBED402** · Yesterday, 06:19 PM

I'm not 100% sure it's coated, but if so, it's hard. However the part was made, it's not magnetic, while the stainless arm very much is.

**1970cstblazer** · Today, 08:13 AM

Those are OEM. Its a die cast zinc metal. I have had the silver coating peel off on a couple of them. I thinks it's a plating, not paint. I have also had the teeth strip. Mine were made by Trico.

**71CHEVYSHORTBED402** · Today, 12:52 PM

Quote:

Originally Posted by 1970cstblazer

Those are OEM. Its a die cast zinc metal. I have had the silver coating peel off on a couple of them. I thinks it's a plating, not paint. I have also had the teeth strip. Mine were made by Trico.

Thank you. I just checked my notes to see these arms are stamped TRICO 3378874

Yesterday, 01:34 PM	#1
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,371	Question about OEM wiper arms Pretty sure these are OEM. Not sure who made them, perhaps Trico. I'm wondering what the head, or spindle nut for lacking a better term is made and finished???? All I know is the coating is durable. Perhaps anodized? GM parts were so great right? 140K on these parts, less the rubber. Attached Images __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025

Yesterday, 06:19 PM	#2
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,371	Re: Question about OEM wiper arms I'm not 100% sure it's coated, but if so, it's hard. However the part was made, it's not magnetic, while the stainless arm very much is. __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025

Today, 08:13 AM	#3
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,990	Re: Question about OEM wiper arms Those are OEM. Its a die cast zinc metal. I have had the silver coating peel off on a couple of them. I thinks it's a plating, not paint. I have also had the teeth strip. Mine were made by Trico. __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels

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