The B&M® vacuum modulator is fully adjustable and allows you to fine-tune your shift points and shift feel. This is done by turning the adjustment screw inside of the vacuum line connection for more or less diaphragm preload, thus raising or lowering part throttle shift points and line pressures. For GM TH350 and TH400 automatic transmissions.
Shipping Origin: To get you your order faster we utilize many warehouses all over the US. Not all items will ship to you directly from our location in Michigan.
Order Cancellation: Orders are processed within 10 minutes of placing your order. If you wish to cancel an order please contact us immediately or it may be too late due to the promptness in which we process and ship orders.
Combined Shipping: When making multiple purchases through eBay from us please add your items to your eBay shopping cart and use the "Request total from seller" button on the cart page. We will then send you an updated invoice with your combined shipping discount. Please contact us prior to making your purchase if you need help with combined shipments.
Domestic Shipping: The shipping cost on this listing or the "Free Shipping" is for the lower 48 States. "Signature Required" is automatically applied to order over $700 and it recommended for all orders however you must request this via eBay message.