1978 Buick Riviera Auto Trans Vacuum Modulator
Navigate our online catalogue to find original replacement Auto Trans Vacuum Modulators specifically designed to fit a 1978 Buick Riviera.




Auto Trans Vacuum Modulator
$69.32 CAD
Limited Stock
Condition: New
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 11:30am)
Pick-Up: Same Business Day (Order before 11:30am)
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Vehicle Fitment Notes:
No Color Mark
No Color Mark




Auto Trans Vacuum Modulator
$69.32 CAD
Limited Stock
Condition: New
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 11:30am)
Pick-Up: Same Business Day (Order before 11:30am)
Required Per Vehicle: 1
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:
No Color Mark
No Color Mark




Auto Trans Vacuum Modulator
$69.32 CAD
Limited Stock
Condition: New
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 11:30am)
Pick-Up: Same Business Day (Order before 11:30am)
Required Per Vehicle: 1
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:
No Color Mark
No Color Mark




Auto Trans Vacuum Modulator
$175.41 CAD
Limited Stock
Condition: New
Ships: Thursday Nov. 6th
Pick-Up: Ready in 1 Hour Thursday Nov. 6th
Pick-Up: Ready in 1 Hour Thursday Nov. 6th
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
$70.56 CAD
In Stock
Condition: New
Ships: Thursday Nov. 6th
Pick-Up: Ready in 1 Hour Thursday Nov. 6th
Pick-Up: Ready in 1 Hour Thursday Nov. 6th
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Vehicle Fitment Notes:
No Color Mark
No Color Mark




Auto Trans Vacuum Modulator
$70.56 CAD
In Stock
Condition: New
Ships: Thursday Nov. 6th
Pick-Up: Ready in 1 Hour Thursday Nov. 6th
Pick-Up: Ready in 1 Hour Thursday Nov. 6th
Required Per Vehicle: 1
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:
No Color Mark
No Color Mark




Auto Trans Vacuum Modulator
$70.56 CAD
In Stock
Condition: New
Ships: Thursday Nov. 6th
Pick-Up: Ready in 1 Hour Thursday Nov. 6th
Pick-Up: Ready in 1 Hour Thursday Nov. 6th
Required Per Vehicle: 1
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:
No Color Mark
No Color Mark




Auto Trans Vacuum Modulator
$108.02 CAD
In Stock
Condition: New
Ships: Thursday Nov. 6th
Pick-Up: Ready in 1 Hour Thursday Nov. 6th
Pick-Up: Ready in 1 Hour Thursday Nov. 6th
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
$109.24 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); 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
$122.71 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Vehicle Fitment Notes:
w/ Brown Dot Screw Type Cap
w/ Brown Dot Screw Type Cap




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 Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0);
Vehicle Fitment Notes:
w/ Brown Dot Screw Type Cap
w/ Brown Dot Screw Type Cap




Auto Trans Vacuum Modulator
$122.71 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
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/ Brown Dot Screw Type Cap
w/ Brown Dot Screw Type Cap




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: 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;
Vehicle Fitment Notes:
w/ Calif. Emissions
w/ Calif. Emissions




Auto Trans Vacuum Modulator
$73.25 CAD
Out of Stock
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Vehicle Fitment Notes:
w/ Brown Stripe
w/ Brown Stripe




Auto Trans Vacuum Modulator
$73.25 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 Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0);
Vehicle Fitment Notes:
w/ Brown Stripe
w/ Brown Stripe




Auto Trans Vacuum Modulator
$110.30 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Vehicle Fitment Notes:
w/ Brown Dot Screw Type Cap
w/ Brown Dot Screw Type Cap




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 Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0);
Vehicle Fitment Notes:
w/ Brown Dot Screw Type Cap
w/ Brown Dot Screw Type Cap




Auto Trans Vacuum Modulator
$110.30 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
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/ Brown Dot Screw Type Cap
w/ Brown Dot Screw Type Cap




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: 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;
Vehicle Fitment Notes:
w/ Calif. Emissions
w/ Calif. Emissions




Auto Trans Vacuum Modulator
$67.79 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Vehicle Fitment Notes:
w/ Brown Stripe
w/ Brown Stripe




Auto Trans Vacuum Modulator
$67.79 CAD
Call For Availability
Condition: New
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Vehicle Fitment Notes:
with brown stripe
with brown stripe




Auto Trans Vacuum Modulator
$67.79 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 Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0);
Vehicle Fitment Notes:
w/ Brown Stripe
w/ Brown Stripe




Auto Trans Vacuum Modulator
$67.79 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 Base: 5.7L 350ci V8 (4.06x3.39; 103.0x86.0);
Vehicle Fitment Notes:
with brown stripe
with brown stripe

Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Vehicle Fitment Notes:
No color code Auto Trans Vacuum Modulator Use until inventory is depleted
No color code Auto Trans Vacuum Modulator Use until inventory is depleted

Auto Trans Vacuum Modulator
Call for Pricing
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:
No color code Auto Trans Vacuum Modulator Use until inventory is depleted
No color code Auto Trans Vacuum Modulator Use until inventory is depleted

Auto Trans Vacuum Modulator
Call for Pricing
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:
No color code Auto Trans Vacuum Modulator Use until inventory is depleted
No color code Auto Trans Vacuum Modulator Use until inventory is depleted

Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Engine Base: 5.7L 350ci V8 (3.80x3.85; 96.5x97.8);
Vehicle Fitment Notes:
Brown screw Auto Trans Vacuum Modulator Use until inventory is depleted
Brown screw Auto Trans Vacuum Modulator Use until inventory is depleted

Auto Trans Vacuum Modulator
Call for Pricing
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:
Brown screw Auto Trans Vacuum Modulator Use until inventory is depleted
Brown screw Auto Trans Vacuum Modulator Use until inventory is depleted

Auto Trans Vacuum Modulator
Call for Pricing
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:
Brown screw Auto Trans Vacuum Modulator Use until inventory is depleted
Brown screw Auto Trans Vacuum Modulator Use until inventory is depleted