1977 Buick Century Auto Trans Vacuum Modulator
Navigate our online catalogue to find original replacement Auto Trans Vacuum Modulators specifically designed to fit a 1977 Buick Century.








Auto Trans Vacuum Modulator
$109.24 CAD
In Stock
Condition: New
Ships: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM400; Transmission Speeds: 3;
Vehicle Fitment Notes:
Alternate Number
Alternate Number






Auto Trans Vacuum Modulator
$175.41 CAD
Limited Stock
Condition: New
Ships: Today, Oct. 13th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM400; Transmission Speeds: 3;
Vehicle Fitment Notes:
Exhaust stock and reorder
Exhaust stock and reorder






Auto Trans Vacuum Modulator
$108.02 CAD
In Stock
Condition: New
Ships: Today, Oct. 13th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM400; Transmission Speeds: 3;
Vehicle Fitment Notes:
Alternate Number
Alternate Number






Auto Trans Vacuum Modulator
$81.71 CAD
Limited Stock
Condition: New
Ships: Today, Oct. 13th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 3.8L 231ci V6 (3.78x3.42; 96.0x86.8); Transmission Code: THM350;
Engine Base: 3.8L 231ci V6 (3.78x3.42; 96.0x86.8); Transmission Code: THM350;
Vehicle Fitment Notes:
Universal
Universal






Auto Trans Vacuum Modulator
$81.71 CAD
Limited Stock
Condition: New
Ships: Today, Oct. 13th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Vehicle Fitment Notes:
w/ GM Trans.
w/ GM Trans.






Auto Trans Vacuum Modulator
$81.71 CAD
Limited Stock
Condition: New
Ships: Today, Oct. 13th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Vehicle Fitment Notes:
w/ GM Trans.
w/ GM Trans.






Auto Trans Vacuum Modulator
$81.71 CAD
Limited Stock
Condition: New
Ships: Today, Oct. 13th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0);
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0);
Vehicle Fitment Notes:
w/ GM Trans.
w/ GM Trans.






Auto Trans Vacuum Modulator
$81.71 CAD
Limited Stock
Condition: New
Ships: Today, Oct. 13th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3);
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3);
Vehicle Fitment Notes:
w/ GM Trans.
w/ GM Trans.






Auto Trans Vacuum Modulator
$81.71 CAD
Limited Stock
Condition: New
Ships: Today, Oct. 13th
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Pick-Up: Ready in 1 Hour (Order before 4:30 PM)
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0);
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0);
Vehicle Fitment Notes:
w/ GM Trans.
w/ GM Trans.






Auto Trans Vacuum Modulator
$122.71 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Transmission Code: THM400; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$122.71 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Engine VIN: R; Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Engine VIN: R; Transmission Code: THM400; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$122.71 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Transmission Code: THM400; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$122.71 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Engine VIN: J; Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Engine VIN: J; Transmission Code: THM400; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$122.71 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Transmission Code: THM400; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$174.67 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Engine VIN: L;
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Engine VIN: L;
Vehicle Fitment Notes:
w/ M33, 38 Trans.
w/ M33, 38 Trans.






Auto Trans Vacuum Modulator
$57.72 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 3.8L 231ci V6 (3.78x3.42; 96.0x86.8); Transmission Code: THM350;
Engine Base: 3.8L 231ci V6 (3.78x3.42; 96.0x86.8); Transmission Code: THM350;
Vehicle Fitment Notes:
OE Style
OE Style






Auto Trans Vacuum Modulator
$57.72 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Engine VIN: L; Transmission Code: THM350; Transmission Speeds: 3;
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Engine VIN: L; Transmission Code: THM350; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$57.72 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Engine VIN: R; Transmission Code: THM350; Transmission Speeds: 3;
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Engine VIN: R; Transmission Code: THM350; Transmission Speeds: 3;
Vehicle Fitment Notes:
w/o High Altitude Emissions
w/o High Altitude Emissions






Auto Trans Vacuum Modulator
$73.25 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Engine VIN: J; Transmission Code: THM350; Transmission Speeds: 3;
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Engine VIN: J; Transmission Code: THM350; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$73.25 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM350; Transmission Speeds: 3;
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM350; Transmission Speeds: 3;
Vehicle Fitment Notes:
w/o High Altitude Emissions
w/o High Altitude Emissions






Auto Trans Vacuum Modulator
$82.10 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 3.8L 231ci V6 (3.78x3.42; 96.0x86.8); Transmission Code: THM350;
Engine Base: 3.8L 231ci V6 (3.78x3.42; 96.0x86.8); Transmission Code: THM350;
Vehicle Fitment Notes:
Universal
Universal






Auto Trans Vacuum Modulator
$82.10 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Vehicle Fitment Notes:
w/ GM Trans.
w/ GM Trans.






Auto Trans Vacuum Modulator
$82.10 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Vehicle Fitment Notes:
w/ GM Trans.
w/ GM Trans.






Auto Trans Vacuum Modulator
$82.10 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0);
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0);
Vehicle Fitment Notes:
w/ GM Trans.
w/ GM Trans.






Auto Trans Vacuum Modulator
$82.10 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3);
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3);
Vehicle Fitment Notes:
w/ GM Trans.
w/ GM Trans.






Auto Trans Vacuum Modulator
$82.10 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0);
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0);
Vehicle Fitment Notes:
w/ GM Trans.
w/ GM Trans.






Auto Trans Vacuum Modulator
$110.30 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Transmission Code: THM400; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$110.30 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Engine VIN: R; Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Engine VIN: R; Transmission Code: THM400; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$110.30 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Transmission Code: THM400; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$110.30 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Engine VIN: J; Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Engine VIN: J; Transmission Code: THM400; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$110.30 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Transmission Code: THM400; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$58.68 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 3.8L 231ci V6 (3.78x3.42; 96.0x86.8); Transmission Code: THM350;
Engine Base: 3.8L 231ci V6 (3.78x3.42; 96.0x86.8); Transmission Code: THM350;
Vehicle Fitment Notes:
OE Style
OE Style






Auto Trans Vacuum Modulator
$58.68 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Engine VIN: L; Transmission Code: THM350; Transmission Speeds: 3;
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Engine VIN: L; Transmission Code: THM350; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$58.68 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Engine VIN: R; Transmission Code: THM350; Transmission Speeds: 3;
Engine Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0); Engine VIN: R; Transmission Code: THM350; Transmission Speeds: 3;
Vehicle Fitment Notes:
w/o High Altitude Emissions
w/o High Altitude Emissions






Auto Trans Vacuum Modulator
$67.79 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Engine VIN: J; Transmission Code: THM350; Transmission Speeds: 3;
Engine Base: 5.7L 5733cc 350ci V8 (3.88x3.75; 98.4x95.3); Engine VIN: J; Transmission Code: THM350; Transmission Speeds: 3;






Auto Trans Vacuum Modulator
$67.79 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM350; Transmission Speeds: 3;
Engine Base: 6.6L 403ci V8 (4.35x3.39; 110.5x86.0); Transmission Code: THM350; Transmission Speeds: 3;
Vehicle Fitment Notes:
w/o High Altitude Emissions
w/o High Altitude Emissions






Auto Trans Vacuum Modulator
$157.02 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Engine VIN: L;
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5); Engine VIN: L;
Vehicle Fitment Notes:
w/ M33, 38 Trans.
w/ M33, 38 Trans.