Specifications
MIG Parts
42
HTP MIG Gun Parts
Compatible with the following welding guns.
SNAP-ON
®
Used on YA205, YA217, YA219, YA240
Illus # Description  Part # Price
A Conical Nozzle S4328B (Pkg 3)   $19.71  
Spot Weld Nozzle  S4329   $9.21 
B .023
"
 Contact Tip 4309B (Pkg 10)   $5.00 
.030
"
 Contact Tip  4310B (Pkg 10)   $5.00 
.035
"
 Contact Tip  4311B (Pkg 10)   $5.00
C Gas Diffuser   S4228   $4.71 
Complete 10’ MIG Gun   S4320-T10-15H   $134.95
A B C
SNAP-ON
®
15TG Series Welding Gun Parts 
Used on FM-140 A, YA-204, YA-212, MM140SL, MM250SL
Illus #  Description    Part # Price
A Gas Nozzle 1/2
"
M3T-N50 $15.95 
B .023" Contact Tip M3-T25 (Pkg 5) $13.00 
.030" Contact Tip M3-T30 (Pkg 5) $13.00 
.035" Contact Tip M3-T35 (Pkg 5) $13.00 
C Insulated Bushing M3T-B $11.95 
D Gas Diffuser M3T-D $14.95 
10’ OEM MIG Gun
HTP Replacement Gun
15TG10
15TG10-24
$291.95
$191.00
A B C D
SOLAR
®
Used on Solar
®
 2225
Illus # Description   HTP Part # Price
A Conical Nozzle 4328B (Pkg 3)  $19.71
Spot Weld Nozzle 4329 $9.21
B .023
"
 Contact Tip 4309B (Pkg 10) $5.00
.030
"
 Contact Tip 4310B (Pkg 10) $5.00
.035
"
 Contact Tip 4311B (Pkg 10) $5.00
C Gas Diffuser
Complete 12’ MIG Gun
334-363-000
S4320-24/12SBE
$43.50
$144.95
A
B C
SOLAR
®
Used on Solar 2110, 2114, 2115, 2120, 2125, 2130, 2140, 2150, 2160, 2175
®
Illus #  Description   Part #   Price
A Conical Nozzle    S4328B (Pkg 3)  $19.71
Spot Weld Nozzle    S4329  $9.21
B  .023
"
 Contact Tip    4309B (Pkg 10)  $5.00
.030
"
 Contact Tip  4310B (Pkg 10)  $5.00
.035
"
 Contact Tip  4311B (Pkg 10)  $5.00
C  Gas Diffuser   S4228  $3.25
Complete 10’ MIG Gun  S4320-T10-15H  $134.95
A B C
Illus #   Description  Part #   Price
A Gas Nozzle   M5-C62  $18.95  
B Nozzle Body   M5-NB   $25.95  
C Insulated Bushing   M5-B   $14.95  
D .023" Contact Tip   MG-T25  $5.95  
.030" Contact Tip   MG-T30  $5.95  
.035" Contact Tip   MG-T35  $5.95  
3/64" Contact Tip   MG-T364  $5.95  
E Gas Diffuser   M35-D  $22.38 
SNAP-ON Spool Gun
®
Used on Models MHG5A, MHG5B, and MHG5300
A B C D E
SNAP-ON is a registered trademark of the Snap-On Company. SOLAR is a registered trademark of Century Manufacturing. HTP is not affiliated with Tweco Products Inc. HTP supplies high quality replacement parts
manufactured by or for HTP to demanding specifications. The parts are designed to be interchangeable and compatible with the aforementioned companies, are not OEM parts and are not endorsed by the
aforementioned companies.
®
800-USA-WELD | www.USAWeld.com
43
MIG
Replacement Guns
HTP replacement welding guns are made to the highest standards – after all, 
they are OEM on our welding machines!  We have taken the design principles 
employed in HTP welding guns and applied them to many of the replacement 
guns we build for other welders. 
You really have to dig deep into the gun to see the quality. Our crimp connec-
tions all use a high temperature shrink tubing to prevent the trigger wires from 
chafing against the crimp connection.
And where do your air hoses fail? At the crimp connection, where you go from a 
flexible to a rigid connection. That is why HTP guns use a spring support system 
at both the handle and the machine end of the welding gun.
You can see the liner, which has a plastic coating to prevent the shielding gas from running out the back of the gun, goes into the 
inner tube. The shielding gas runs down the outside of the liner and the inside of the inner tube. The copper wires which carry the 
welding current, and the trigger wires which activate the machine, are neatly wound around the inner tube. And the whole 
assembly is encased in a heat resistant, flexible rubber outer sheath.
Our color coordinated handles are ergonomic, fit your 
hand better and are disassembled without any tools. 
And if you really want to make your welding easier, 
consider upgrading to the HTP Flex Neck Gun - we can 
outfit many of the guns we make with our flexible neck 
– great for exhaust work or building roll cages.
With HTP replacement guns you get the best of both 
worlds, a better than OEM quality gun at an 
affordable price. With over 30 years of experience in 
the welding field, we can custom build you a gun for 
virtually any machine. So don’t throw that old 
welder away, put new life into it with a new HTP 
replacement welding gun.
The crimp connection - key to good transfer of the welding current - uses high 
quality copper crimps and solid brass fittings and lock nuts. Some companies use 
steel to save money – not HTP.
And at right is a cutaway of the
coaxial welding cable assembly:
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MIG Parts
CRIMP CONNECTION WITH INSULATION
Trigger Wires
Insulated
Crimp
Brass
Fitting
CRIMP CONNECTION WITH INSULATION
Trigger Wires
Brass Fitting
Copper Crimp
(secures copper wires to brass fitting)
Copper Crimp
(secures rubber jacket)
COAXIAL CABLE ASSEMBLY
Rubber
Outer Jacket
Liner
Trigger Wire
Copper Wires Inner Tube
The welding cable is supported by a spring to
prevent kinking and for longer cable life










