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Motor Cross Reference For SilentMaster® Units

We take pride in our large line of industry standard motors for SilentMaster Central Vacuum. With hundreds of motors in stock, you can rest assured that the right one will arrive at your doorstep. The cross reference chart below will help you decide which motor is correct of your SilentMaster unit. If you need any assistance, feel free to call us toll-FREE at 1-800-971-7172

We have the lowest prices for these brand NEW genuine motors made by the original company AND we guarantee the lowest price anywhere BY 5% AND all orders with motors have $5 shipping and no tax (except CA).

Be sure to take a look at these vacuum kits made to fit your SilentMaster Central Vacuum. Go to Kits for SilentMaster.


SilentMaster Model Number SilentMaster Motor Replacement Number
S1, S3 (110v) 116764
S2 (110v) 119413
S2 (240v), S1 Foreign 116296
S3 (240v) N/A
S4 (110v), S5 (110v) 117939
S4 (240v), S5 (240v) 117944
SP2 (110v) 117478
SP2 (240v) 117572
SP22 (110v) 117478 (Takes 2 motors)
SP22 (240v) 117478 (Takes 2 motors)
SP3 117500

5.7in Diameter Motor Gasket
Dense spongy gasket is about 3/8" thick.
Part # MCVO-57GSK
$2.50
7.2in Diameter Motor Gasket
Dense spongy gasket is about 3/8" thick.
Part # MCVO-72GSK
$2.75

116296 Lamb Ametek Motor
New, 2-stage, 5.7 inch wide, 220-240 volt Lamb 116296 Ametek vacuum motor. Specifications for 116296 lamb ametek vacuum motor: Height 7", Waterlift 94.2", CFM 110.5, AirWatts 349, Amps 4.4.
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Part # MCVO-6296
$115.99
116764 Lamb Ametek Motor
New, 3-stage, 5.7 inch wide, 110-120 volt Lamb 116764 Ametek vacuum motor. Specifications for lamb 116764 ametek vacuum motor: Height 7.75", Waterlift 119.6", CFM 100, AirWatts 382, Amps 10.7.
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Part # MCVO-6764
$119.26

117478 Lamb Ametek Motor
New, 2-stage, 7.2 inch wide, 110-120 volt Lamb 117478 Ametek vacuum motor. Specifications for 117478 lamb ametek vacuum motor: Height 7.75", Waterlift 120", CFM 115.8, AirWatts 549, Amps 13.5.
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Part # MCVO-7478
$160.70
117500-12 Lamb Ametek Motor
New, 3-stage, 7.2 inch wide, 110-120 volt Lamb 117500 Ametek vacuum motor. Specifications for 117500 lamb ametek vacuum motor: Height 8.75", Waterlift 145.9", CFM 102.5, AirWatts 530, Amps 14.2.
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Part # MCVO-7500
$231.49

117572 Lamb Ametek Motor
New, 2-stage, 7.2" inch wide, 220-240 volt Lamb 117572 Ametek vacuum motor. Specifications for 117572 lamb ametek vacuum motor: Height 7.75", Waterlift 123.6", CFM 113.9, AirWatts 482, Amps 6.5.
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Part # MCVO-7572
$195.49
117939 Lamb Ametek Motor
New, 3-stage, 5.7 inch wide, 110-120 volt Lamb 117939 Ametek vacuum motor. Specifications for 117939 lamb ametek vacuum motor: Height 8", Waterlift 138.6", CFM 101.2, AirWatts 458, Amps 13.6.
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Part # MCVO-7939
$109.49

117944 Lamb Ametek Motor
New, 2-stage, 5.7 inch wide, 220-240 volt Lamb 117944 Ametek vacuum motor. Specifications for 117944 lamb ametek vacuum motor: Height 8", Waterlift 138.1", CFM 100.3, AirWatts 444, Amps 6.7.
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Part # MCVO-7944
$129.49
119413 Lamb Ametek Motor
New, 2-stage, 5.7 inch wide, 110-120 volt Lamb 119413 Ametek vacuum motor. Specifications for 119413 lamb ametek vacuum motor: Height 6.5", Waterlift 84.9", CFM 97, AirWatts 255, Amps 7.4.
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Part # MCVO-9413
$94.49

Central Vacuum Muffler
Muffler fits on central vacuum canisters with an exhaust port outer dimension of two inches.
Part # MCVO-MUFF
$12.99
Central Vacuum Motor Exhaust Coupling
This motor exhaust coupling can be used on either side. The wider side has an inner diameter of 2in, and an outer diameter of 2-1/4in. The narrow side has an inner diameter of 1-7/8in, and an outer diameter of 2-1/8in. This is used with central vacuum pipe to add to the length of the exhaust. This exhaust can be used with both central vacuum pipe and SCH40; however, the exhaust may be confined with the SCH40 since the SCH40 is thicker.
Part # MCVO-MTRCOUP
$1.80

Vacuum Unit Circuit Board 15a 120v
Circuit board for single motor vacuum units. Will not work with all central vacuums. Have an electrician replace yours!
Part # MCVO-CB15A
$39.99
Two Motor Circuit Board 15a 120v
Circuit board for dual motor vacuum units under 16 amps. Will not work with all central vacuums. Have an electrician replace yours!
Part # PCVO-CB2MTR
$42.99


Take a look at the best-in-the-industry Attachment Kits for your SilentMaster Central Vacuum!


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