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I'm looking at replacement engines for my 2003 Nissan Altima 2.5 L 4-cylinder and I see one that mentions having the DOHC.

I'm wondering does that matter or not because I see others that do not have the DOHC.

  • Welcome to the site. It would help if you could add more information that illustrates the difference between the two options. Do you have engine codes or pictures? And is your Altima's engine DOHC? – Zaid Mar 27 '18 at 5:42
  • Thats what I dont know. If the engine doesnt come with the DOHC would it still work or no. Would the VIN # help? – Jameka Mar 27 '18 at 6:13
  • Is the engine that is present in your Altima DOHC or non-DOHC? – Zaid Mar 27 '18 at 6:14
  • Doesnt have a engine. I bought it wothout one – Jameka Mar 27 '18 at 6:29
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    What do you think DOHC stands for - question for OP only... – Solar Mike Mar 27 '18 at 6:43
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All Nissan Altima from that generation have a DOHC engine, so there is no difference.

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