Factory Fresh Air Duct info needed

[tj 413]

This pic is from the LMC website. The parts I need similar to part number 38-4359 (duct fresh air) and 38-4357 (air inlet cover). According to LMC website these part numbers cover only K5s from 81 to 86. My truck is a 91. They do sell the factory preheater duct from 79-91.

My question is, if I find an 87 to 90 (obviously a 91 should work) K5 blazer parts truck, will the fresh air duct and air inlet cover from those years be the same to fit my 91

I couldn't find any info here.

Thanks in advance for advice.




Factory Air Cleaner Components







https://www.lmctruck.com/fuel-syste...nJkU5nqINKCyiNWEq0_aem_0by6Z0pDsCRHkfAQpTNE5g

 

[tarussell]

The air cleaner assembly and the fresh air ducting for ‘87~’91 TBI engines is different from the ‘86 on down carbureted engines.

If you get parts from an ‘87~’91 K5 and related trucks all should be compatible.

 

[82355]

'87-'88 is different from '89-'91

Martin

 

[tarussell]

'87-'88 is different from '89-'91

Martin

Did not realize that.

 

[Blue85]

Right, the real question is whether it's a square body vehicle or a GMT400 body.

 

[82355]

Did not realize that.

Due to the change in core support.

Martin