- Toyota OEM Union 1/4″, 90404-51026, $5.94*
- Mann Complete In-Line Fuel Filter, 33001, $4.99
- Toyota OEM plug, Breather 1/4″, 90930-03136, $5.27
- 1/4″ Fuel Line Hose, $5.06
- 1/4″ Hose Clamps, $2.99
- 14mm open wrench
- Clean rag w/degreaser
- A few black zip ties
The whole job literally takes less than 10 minutes, and parts came out to just under $20 for everything. This is an easy job, you don’t even have to jack the vehicle up, just make sure you have all the parts you need first.
NOTE: After looking at the fitting options I noticed that the Nissan version “Breather Tube Connector”, part #38323-C601A works but it is a smaller diameter connector, like 1/8″ or 3/16″ maybe. I opted for using 1/4″ sizing which meant using the Toyota OEM part instead.
STEP 1: First, clean away the area around the OEM breather using a rag and your choice of degreaser. Use the 14mm open wrench and remove the OEM breather cap. The Toyota OEM union will thread right in. Note: there will be 2-3 threads exposed when the Toyota OEM union is threaded in, this is fine; you will not get it flush with the axle housing, but this is not a problem as it threads in more than enough.
STEP 2: Attach fuel tubing and secure with a 1/4″ hose clamp. Run the hose along the side of the right-side brake line, and secure with zip ties (leave some hose slack as shown in the photo below.)
STEP 3: From here many people have their own version of how and what to do after this; some people just zip tie the bare hose and and call it done. Some people run the hose all the way to behind the right-side taillamp and install an in-line filter at the end of the hose. I chose to have the filter in-line, with another piece of hose afterward. As for the in-line filter, I mounted mine on an unused bracket that you can find near the center of the factory crossbar right above the axle.
STEP 4: I attached another piece of hose on the in-line filter and ran it to a second unused bracket (on the same crossbar, but to the right), as shown in the photo below.
STEP 5: Finally, for extra moisture prevention I installed a matching 1/4″ Toyota breather at the end of the hose; the Toyota breather is a 2-way (no spring) to allow for air expansion and contraction. I liked this way better than the smaller diameter Nissan version, which has a spring in the cap making it exit-only.