Honda Part #18121-5A2-A10

• Description: Primary Converter Cover / Converter Shield / Exhaust Manifold Heat Shield. Honda catalogs it as a Converter Shield, while Acura often lists it as a Manifold Cover or Primary Converter Cover. 
• Genuine Honda/Acura OEM part.
• Common fitment:
  • 2013-2017 Honda Accord Sport 2.4L
  • 2015-2019 Honda CR-V 2.4L
  • 2016-2022 Acura ILX 2.4L
  • 2015-2020 Acura TLX 2.4L DCT 

Difference from 18120-5A2-A00

• 18120-5A2-A00 = one converter/manifold shield
• 18121-5A2-A10 = the companion Primary Converter Cover used on the same exhaust assembly. 

eBay Title

Genuine OEM Honda Acura 18121-5A2-A10 Primary Converter Cover Heat Shield Accord CR-V ILX TLX 2.4L

Item Specifics

• Brand: Honda / Acura Genuine OEM
• MPN: 18121-5A2-A10
• Type: Exhaust Heat Shield
• Other Names: Converter Shield, Manifold Cover, Primary Converter Cover
• Fitment Type: Direct Replacement
• Material: Stamped Steel

Pricing

• MSRP: approximately $64.50
• Online OEM price: approximately $41-$46. 

Suggested eBay Price

• Fast sale: $24.99 + shipping
• Market value: $34.99 + shipping
• New sealed OEM: $44.99-$54.99 + shipping

For a NOS Honda part in the original bag, I'd probably list at $49.99 + shipping and accept offers. Heat shields aren't high-volume sellers, but OEM Honda exhaust shields can move because aftermarket replacements are usually unavailable.