G35 to 350Z Exhaust Swap: Fitment Facts and Hanger Removal
G35 to 350Z Exhaust Swap: Fitment Facts and Hanger Removal
Buying a used exhaust from a similar platform saves money, but only if you have the fabrication skills to make it fit correctly.
The Short Answer (TL;DR)
A generic G35 Coupe exhaust will not bolt directly onto a Nissan 350Z. The G35 chassis is longer, meaning the exhaust mid-pipe is roughly 6 inches too long for the Z. You must cut and re-weld the piping. For stuck hangers, lubricate the rubber insulators with silicone spray and use exhaust hanger pliers or a pry bar to force the stud through.
The DIY Process Overview
The Nissan 350Z (Z33) and Infiniti G35 Coupe share the FM platform, but they are not identical. Many owners attempt to swap parts between the two. Here is what you need to know about the geometry and the removal process discussed in the community.
The Fitment Reality: Length Matters
The G35 Coupe has a longer wheelbase than the 350Z. Consequently, the exhaust system on the G35 features a longer mid-pipe (extension pipe). To fit a G35 exhaust onto a 350Z, you must remove approximately 6 inches of straight piping from the mid-section. This requires cutting tools and a welder to rejoin the flange or pipe. If the used exhaust has complex bends in that specific area, the modification becomes significantly harder.
Removing Stubborn Exhaust Hangers
Factory rubber exhaust insulators harden and crack over heat cycles. The metal hanger rods often have a bulbous "mushroom" tip that fights against the rubber hole. Do not rely solely on elbow grease.
Apply a liberal amount of penetrating oil or silicone lubricant inside the rubber hole and on the metal rod. Allow it to soak for five minutes. Use a large flathead screwdriver or a pry bar to leverage the rubber mount off the metal bracket. Ideally, purchase a pair of exhaust hanger removal pliers to squeeze the bracket out without damaging the rubber.
Why You Should Upgrade While You're In There
Installing a "custom" used exhaust often means inheriting someone else's poor welding or cheap aluminized steel. If you are already under the car fighting rusted bolts and stuck hangers, it is more efficient to install a system meant for your specific chassis. A proper aftermarket cat-back system for the Z33 ensures correct backpressure, proper flange alignment, and stainless steel construction that resists corrosion.
Recommended Upgrade: Performance Stainless Steel Cat-Back Exhaust System
Shop Nissan 350Z Upgrades Here
Frequently Asked Questions
Do I need to bend the G35 pipe to fit the 350Z?
Generally, no. The difference is primarily in the length of the straight section of the mid-pipe. However, if the previous owner modified the angles or used a custom layout, you may run into clearance issues with the rear sway bar or differential.
Can I use WD-40 on exhaust hangers?
Yes, WD-40 works, but silicone spray is often better for rubber components as it prevents them from drying out long-term. The key is lubrication combined with mechanical leverage. If the rubber is dry-rotted, cut it off and replace it with polyurethane hangers.
