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Benjamin Marauder Pressure Gauge Change – Vital Information For Owners!

Over time, all good manufacturing companies make ongoing improvements to their products. So it’s no surprise to know that, in recent times, Velocity Outdoor has made a Benjamin Marauder pressure gauge change.

A similar change also applies to the Benjamin Armada, Fortitude and Maximus PCP air rifles.

So, if you have a Benjamin PCP air rifle that’s more than about a year old, it’s important to understand this change.

This is because the new manufacturing improvement meant some new parts in the Marauder, Armada, Fortitude and Maximus models. The old parts have been discontinued and are no longer available.

However, if you have an older Benjamin PCP and need a replacement pressure gauge, fear not! There is a path forward as we describe here.

Benjamin Marauder Pressure Gauge Change - Vital Information For Owners!

Without doubt, Velocity Outdoor leads the airgun industry in providing spare parts support for their airguns. The company provides online parts diagrams and parts lists for most of their products. You can also find many parts available for Benjamin and Crosman airguns available through Archer Airguns – for example.

Some well-known airgun manufacturers will not even sell you spare parts in the event you have a problem with their gun down the road! That’s something that’s worth checking-out before you make a purchase decision on that new air rifle…


So What Is This Change?

Basically, it’s a change of screw threads used on the pressure gauge. The new threads are not compatible with the old ones. This means that a “new” replacement gauge will also require a new Gauge Adapter to be fitted to an “old” gun.

Velocity Outdoor Senior Design Engineer John Solpietro explained to HAM that it was decided to change from tapered threads on the gauge to parallel (or straight) threads. The reason for this Benjamin Marauder pressure gauge change was to further reduce the potential for leakage of High Pressure Air from the gauge threads.

Velocity Outdoor tests every PCP airgun they make with a (minimum) 24-hour leak test. So the company was easily able to quantify the improvement produced by the new thread design and has made a “campaign change” of parts over all it’s US-manufactured PCP airguns.

Benjamin Marauder Pressure Gauge Change - Vital Information For Owners!

The “old” tapered thread gauges are installed using tape on the threads to eliminate leaks. Straight thread gauges – in comparison – do not use sealing tape but have an elastomer sealing washer.

As the pressure gauge in these air rifles fits into a Gauge Adapter, there’s also a change of Gauge Adapter parts to accommodate the new threads. The Gauge Adapter fits into the Gauge Port which is located entirely inside the HPA tube of these models.

Benjamin Marauder Pressure Gauge Change - Vital Information For Owners!

So – in future – you’ll need a new gauge PLUS Gauge Adapter if you need to replace a defective pressure gauge in an older Benjamin PCP air rifle.

NOTE: To find out the manufacturing date of your Benjamin PCP air rifle, use this previous HAM post for details.


Marauder Pressure Gauge Change Details (Also Armada)
Marauder Gauge AdapterDifference To Previous VersionWorks With This Pressure GaugeFits Marauder ModelsAvailability
1761A017This was the original adapter used on Gen 1 Marauders.1763-033 (tapered threads)1763, 2263, 2563Obsolete. No longer available.
1764-017Shorter length to match depth of Gen 2 stocks1763-033 (tapered threads)Fits all 1764, 2264, 2564. Used on rifles manufactured prior to approximately Feb 2020Obsolete. No longer available.
1764-080Has straight female threads to match new gauge with straight threads1764-033 (straight threads)Fits all 1764, 2264, 2564. Currently used on rifles manufactured AFTER approximately Feb 2020Available
1764-110This is 1764-080 Adapter PLUS the new 1764-033 gauge, and 1764-081 washer sold as an assembly.Included1764, 2264, 2564 models manufactured prior to approximately Feb 2020 where a new Gauge Adapter is required.

 Now only solution for 1763, 2263, 2563 models needing a new Gauge Adapter, although gauge will be inset below stock surfaceAvailable

Fortitude Pressure Gauge Change Details
Fortitude Gauge AdapterDifference To Previous VersionWorks With This Pressure GaugeFits Fortitude ModelsAvailability
1761A017This was the original adapter used on Fortitude.1763-033 (tapered threads)All Fortitude models.
Used on rifles manufactured prior to approximately Feb 2020
Obsolete. No longer available.
1761-042Has straight female threads to match new gauge with straight threads1764-033 (straight threads)All Fortitude models.
Currently used on rifles manufactured AFTER approximately Feb 2020
Available
ME-107This is 1761-042 Adapter PLUS the new 1764-033 gauge, and 1764-081 washer sold as an assembly.IncludedAll Fortitude models.
manufactured prior to approximately Feb 2020 where a new Gauge Adapter is required.


Available

Maximus Pressure Gauge Change Details (also Discovery)
Maximus
Gauge Adapter
Difference To Previous VersionWorks With This Pressure GaugeFits Maximus ModelsAvailability
1761A017This was the original adapter used on Maximus.1761-014 (tapered threads)All Maximus models.
Used on rifles manufactured prior to approximately July 2020
Obsolete. No longer available.
1761-042Has straight female threads to match new gauge with straight threads1761-041 (straight threads)All Maximus models.
Currently used on rifles manufactured AFTER approximately July 2020
Available
GBMP-108This is 1761-042 Adapter PLUS the new 1761-041 gauge, and 1764-081 washer sold as an assembly.IncludedAll Maximus models.
manufactured prior to approximately July 2020 where a new Gauge Adapter is required.


Available

Thanks to John Solpietro and Phillip Guadalupe from Velocity Outdoor for their help in preparing this information.

We’ll have information on how this change impacts the Crosman Challenger and Crosman/Benjamin PCP air pistols in a second HAM post coming soon…


SAFETY FIRST: As with any work on any PCP airgun, before starting it’s vital to first ensure that the gun is clear, has no pellet in the barrel, is on safe and that no High Pressure Air remains in the gun. If you have any concern about de-gassing the gun, or any other aspect of safety, DO NOT START WORK!