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The galaxy cluster Zwicky 3146 is a sloshing cool core cluster at $z=0.291$that in X-ray imaging does not appear to exhibit significant pressuresubstructure in the intracluster medium (ICM). The published $M_{500}$ valuesrange between $3.88^{+0.62}_{-0.58}$ to $22.50 \pm 7.58 \times 10^{14}$M$_{\odot}$, where ICM-based estimates with reported errors $<20$\% suggestthat we should expect to find a mass between $6.53^{+0.44}_{-0.44} \times10^{14}$ M$_{\odot}$ (from Planck, with an $8.4\sigma$ detection) and$8.52^{+1.77}_{-1.47} \times 10^{14}$ M$_{\odot}$ (from ACT, with a $14\sigma$detection). This broad range of masses is suggestive that there is ample roomfor improvement for all methods. Here, we investigate the ability to estimatethe mass of Zwicky 3146 via the Sunyaev-Zel'dovich (SZ) effect with data takenat 90 GHz by MUSTANG-2 to a noise level better than $15\ \mu$K at the center,and a cluster detection of $104\sigma$. We derive a pressure profile from ourSZ data which is in excellent agreement with that derived from X-ray data. Fromour SZ-derived pressure profiles, we infer $M_{500}$ and $M_{2500}$ via threemethods -- $Y$-$M$ scaling relations, the virial theorem, and hydrostaticequilibrium -- where we employ X-ray constraints from \emph{XMM-Newton} on theelectron density profile when assuming hydrostatic equilibrium. Depending onthe model and estimation method, our $M_{500}$ estimates range from $6.23 \pm0.59$ to $10.6 \pm 0.95 \times 10^{14}$ M$_{\odot}$, where our estimate fromhydrostatic equilibrium, is $8.29^{+1.93}_{-1.24}$ ($\pm 19.1$\% stat)${}^{+0.74}_{-0.68}$ ($\pm 8.6$\% sys, calibration) $\times 10^{14}$M$_{\odot}$. Our fiducial mass, derived from a $Y$-$M$ relation is$8.16^{+0.44}_{-0.54}$ ($\pm 5.5$\% stat) ${}^{+0.46}_{-0.43}$ ($\pm 5.5$\%sys, $Y$-$M$) ${}^{+0.59}_{-0.55}$ ($\pm 7.0$\% sys, cal.) $\times 10^{14}$M$_{\odot}$.

Pressure profiles and mass estimates using high-resolution Sunyaev-Zel'dovich effect observations of Zwicky 3146 with MUSTANG-2