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B&M Adjustable Modulator - GM TH350/TH400 Automatic Transmissions - 20234

B&M Adjustable Modulator - GM TH350/TH400 Automatic Transmissions - 20234

SKU: 20234
Regular price $41.97 USD
Regular price Sale price $41.97 USD
Sale Sold out

Overview:

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.

Features:

  • Allows you to Tailor Shift Points
  • New O-ring Helps Stop Leaks
  • Fully Adjustable
  • B&M Quality

Year Make Model Submodel Engine Size
1967 - 1970 Pontiac Executive
1965 - 1969 Pontiac Tempest
1965 - 1969 Buick Special
1967 - 1972 Buick Sportwagon
1965 - 1983 Cadillac Commercial Chassis
1970 - 1974 GMC G35/G3500 Van
1970 Pontiac Tempest Base
1967 - 1974 GMC C25/C2500 Suburban
1967 - 1974 GMC K25/K2500 Pickup
1968 - 1974 GMC K25/K2500 Suburban
1968 - 1974 GMC K35/K3500 Pickup
1971 - 1977 GMC Sprint
1965 - 1971 Oldsmobile 442
1965 Oldsmobile 98 Base
1966 - 1980 Oldsmobile 98
1971 - 1980 Oldsmobile Custom Cruiser
1967 Oldsmobile Cutlass Turnpike Cruiser
1968 - 1980 Oldsmobile Cutlass
1979 - 1990 GMC K1500
1975 - 1978 GMC K25
1966 - 1971 Chevrolet Chevelle
1965 - 1972 Chevrolet Chevelle Base
1972 Chevrolet Chevelle SS
1972 Chevrolet Chevelle Malibu
1966 - 1967 Chevrolet Chevy II Base
1967 Chevrolet Chevy II Nova SS
1967 - 1980 Chevrolet Corvette
1965 - 1980 Chevrolet El Camino
1969 - 1974 Chevrolet G10 Van
1969 - 1974 Chevrolet G20 Van
1970 - 1974 Chevrolet G30 Van
1963 - 1980 Chevrolet Impala
1966 - 1974 Chevrolet K10 Pickup
1967 - 1984 Chevrolet K10 Suburban
1975 - 1978 GMC K25 Suburban
1979 - 1986 GMC K2500 Suburban
1979 - 1990 GMC K2500
1977 - 1978 GMC K35
1979 - 1990 GMC K3500
1975 - 1978 GMC P15
1979 - 1980 GMC P1500
1975 - 1978 GMC P25
1979 - 1989 GMC P2500
1975 - 1978 GMC P35
1979 - 1990 GMC P3500
1987 GMC R1500
1990 GMC R1500 Suburban
1987 - 1989 GMC R2500
1987 - 1990 GMC R2500 Suburban
1987 - 1990 GMC R3500
1987 GMC V1500
1990 GMC V1500 Suburban
1966 - 1974 Chevrolet K20 Pickup
1967 - 1986 Chevrolet K20 Suburban
1975 - 1989 Chevrolet P20
1979 - 1990 GMC G2500
1975 - 1978 GMC G35
1969 - 1990 Chevrolet Blazer
1969 - 1972 Chevrolet Brookwood
1966 - 1974 Chevrolet C10 Pickup
1967 - 1984 Chevrolet C10 Suburban
1988 - 1990 Chevrolet K1500
1975 - 1986 Chevrolet K20
1988 - 1990 Chevrolet K2500
1977 - 1986 Chevrolet K30
1988 - 1990 Chevrolet K3500
1965 - 1981 Cadillac DeVille
1965 - 1979 Cadillac Eldorado
1965 - 1984 Cadillac Fleetwood
1963 - 1975 Chevrolet Bel Air
1963 - 1972 Chevrolet Biscayne
1967 - 1968 Oldsmobile Delmont 88
1968 - 1980 Oldsmobile Delta 88
1965 - 1966 Oldsmobile Dynamic 88
1965 - 1972 Oldsmobile F85
1966 Oldsmobile F85 Base
1966 Oldsmobile F85 Deluxe
1966 Oldsmobile Jetstar 88
1973 - 1979 Oldsmobile Omega
1965 - 1980 Oldsmobile Starfire
1968 - 1975 Oldsmobile Vista Cruiser
1965 - 1980 Pontiac Bonneville
1965 - 1967 Pontiac Catalina Base
1966 Pontiac Catalina 2+2
1966 - 1967 Pontiac Catalina Safari
1968 - 1980 Pontiac Catalina
1967 - 1968 Pontiac Firebird Base
1967 Pontiac Firebird HO
1967 - 1968 Pontiac Firebird Sprint
1967 - 1968 Pontiac Firebird 400
1968 Pontiac Firebird 350
1969 - 1981 Pontiac Firebird
1973 - 1980 Pontiac Grand Am
1965 - 1980 Pontiac Grand Prix
1975 - 1976 Chevrolet Laguna
1975 - 1980 Chevrolet Malibu
1970 - 1980 Chevrolet Monte Carlo
1975 - 1980 Chevrolet Monza
1969 - 1978 Chevrolet Nova
1975 - 1980 Chevrolet P10
1975 Pontiac Grand LeMans
1976 - 1980 Pontiac Grand LeMans Base
1977 - 1980 Pontiac Grand LeMans Safari
1975 - 1978 Pontiac Grand Safari
1971 - 1975 Pontiac Grandville
1965 - 1980 Pontiac LeMans
1976 - 1977 Pontiac LeMans Base
1976 - 1977 Pontiac LeMans Sport
1977 Pontiac LeMans Safari
1977 - 1979 Pontiac Phoenix
1976 - 1980 Pontiac Sunbird
1965 - 1978 Buick Riviera
1975 - 1980 Buick Skyhawk
1965 - 1979 Buick Skylark
1965 - 1976 Cadillac Calais
1981 Oldsmobile Cutlass LS
1976 - 1977 Oldsmobile Cutlass S
1977 Oldsmobile Cutlass 442
1977 Oldsmobile Cutlass Colonnade
1976 - 1977 Oldsmobile Cutlass Colonnade S
1975 - 1980 Oldsmobile Cutlass Salon
1976 Oldsmobile Cutlass Tiara
1978 - 1980 Oldsmobile Cutlass Calais
1980 Oldsmobile Cutlass Cruiser
1975 - 1980 Oldsmobile Cutlass Supreme
1978 Oldsmobile Toronado
1975 - 1977 Pontiac Astre
1968 - 1974 GMC C15/C1500 Pickup
1968 - 1974 GMC C15/C1500 Suburban
1967 - 1974 GMC C25/C2500 Pickup
1968 - 1974 GMC C35/C3500 Pickup
1969 - 1974 GMC G15/G1500 Van
1969 - 1974 GMC G25/G2500 Van
1970 - 1990 GMC Jimmy
1966 - 1974 GMC K15/K1500 Pickup
1971 - 1977 Pontiac Ventura
1973 - 1975 Buick Apollo
1971 - 1973 Buick Centurion
1973 - 1981 Buick Century
1965 - 1981 Buick Electra
1970 - 1981 Buick Estate Wagon
1965 - 1967 Buick Gran Sport
1970 - 1972 Buick GS
1967 - 1974 GMC K15/K1500 Suburban
1969 - 1974 Chevrolet P20 Van
1965 - 1967 Chevrolet P30 Series
1969 - 1974 Chevrolet P30 Van
1966 Chevrolet Suburban
1969 - 1972 Chevrolet Townsman
1971 - 1973 Chevrolet Vega Base
1974 - 1977 Chevrolet Vega
1975 - 1990 Chevrolet G10
1975 - 1990 Chevrolet G20
1975 - 1990 Chevrolet G30
1975 - 1986 Chevrolet K10
1987 GMC V2500
1987 - 1990 GMC V2500 Suburban
1987 - 1990 GMC V3500
1966 - 1980 Chevrolet Caprice
1988 - 1990 Chevrolet C1500
1975 - 1986 Chevrolet C20
1967 - 1986 Chevrolet C20 Suburban
1988 - 1990 Chevrolet C2500
1975 - 1986 Chevrolet C30
1988 - 1990 Chevrolet C3500
1969 - 1981 Chevrolet Camaro
1965 - 1981 Buick LeSabre
1973 - 1981 Buick Regal
1979 - 1990 GMC C2500
1975 - 1978 GMC C25 Suburban
1979 - 1986 GMC C2500 Suburban
1975 - 1978 GMC C35
1979 - 1990 GMC C3500
1978 - 1980 GMC Caballero
1975 - 1978 GMC G15
1979 - 1990 GMC G1500
1975 - 1978 GMC G25
1966 - 1974 Chevrolet C20 Pickup
1966 - 1974 Chevrolet C30 Pickup
1973 Chevrolet Camaro Base
1973 Chevrolet Camaro RS
1973 Chevrolet Camaro LT
1965 Chevrolet Chevelle Deluxe
1966 - 1973 Pontiac GTO
1965 - 1966 Pontiac Star Chief
1982 - 1983 Cadillac Fleetwood Base
1982 - 1983 Cadillac Fleetwood Formal
1987 - 1990 Cadillac Brougham
1976 - 1978 Cadillac Seville
1975 - 1986 Chevrolet K5 Blazer
1975 - 1986 Chevrolet C10
1979 - 1990 GMC G3500
1981 - 1985 GMC G3500 Rally
1981 - 1985 GMC G3500 Rally STX
1981 - 1985 GMC G3500 Vandura
1981 - 1985 GMC G3500 Magnavan
1981 - 1985 GMC G3500 Rally Camper Special
1981 - 1985 GMC G3500 Vandura Special
1975 - 1978 GMC K15
1975 - 1978 GMC K15 Suburban
1979 - 1984 GMC K1500 Suburban
1975 - 1990 Chevrolet P30
1987 Chevrolet R10
1990 Chevrolet R1500 Suburban
1987 - 1988 Chevrolet R20
1987 - 1988 Chevrolet R20 Suburban
1989 Chevrolet R2500
1989 - 1990 Chevrolet R2500 Suburban
1987 - 1988 Chevrolet R30
1989 - 1990 Chevrolet R3500
1987 Chevrolet V10
1990 Chevrolet V1500 Suburban
1987 Chevrolet V20
1987 - 1988 Chevrolet V20 Suburban
1989 - 1990 Chevrolet V2500 Suburban
1987 - 1988 Chevrolet V30
1989 - 1990 Chevrolet V3500
1975 - 1978 GMC C15
1979 - 1990 GMC C1500
1975 - 1978 GMC C15 Suburban
1979 - 1984 GMC C1500 Suburban
1975 - 1978 GMC C25
1968 - 1974 Buick LeSabre Base
1969 Buick Skylark Base
1965 - 1970 Buick Wildcat
1968 Buick Wildcat Base
1969 - 1974 Chevrolet K30 Pickup
1969 - 1970 Chevrolet Kingswood Base
1971 - 1972 Chevrolet Kingswood
1973 - 1974 Chevrolet Malibu Base
1965 - 1967 Chevrolet P10 Series
1965 - 1967 Chevrolet P20 Series

Brand B&M
California Proposition 65 Chemical Name Cadmium and cadmium compounds
California Proposition 65 Required Yes
Emission Code 5
Finish Gold Iridited
Instructions Included Yes
Material Steel
Product Type Automatic Transmission Modulator Valve
Warning California Proposition 65
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Policies and FAQs

Return Policy

We accept returns on products within 30 days of delivery. Return shipping is the responsibility of the buyer unless we, the seller, are at fault.

Fault reasons include but are not limited to:
  • Buyer was shipped the wrong product
  • Buyer was shipped a damaged product
  • The product page had incorrect fitment and the part does not fit the Buyer's vehicle
 
The Buyer will not be refunded outbound shipping unless the Seller (Modern Day Muffler & Brake) is at fault.
 
In cases where the Buyer purchases and ships the return please note that if the Shipper (ex. USPS, FedEx, UPS, etc.) loses the return we will not be able to offer a refund as the Buyer must contact the Shipper and make a claim.
 
All products must be returned in original condition, meaning that the product must not be damaged, installed, or missing pieces/parts. If the product is not in original condition a deduction will be issued of up to 50% of the purchase price of the product.
 
Opened boxes, plastic bags, and other packaging are not considered damage (excluding single use items such as, but not limited to, liquids, software, and other components that cannot be reused/resealed).
 
When we, the seller, are at fault, please Contact Us for a return label, products returned with a shipping label not provided by the seller will not be refunded to the buyer. Please also note that our return labels are issued with the dimensions and weight of the original shipment, if the product is being returned in any box/package besides the original please Contact Us with the dimensions and weight.

Returns must be sent to this address:
Modern Day Muffler & Brake
774 Broad Street
Wadsworth, OH 44281
 
Products returned directly to a manufacturer or the incorrect address may be issued a deduction or denied a refund entirely.
 
If a product was delivered outside the 30 day return window or is no longer in original condition please contact us as we may be able to issue a refund in store credit and/or with a deduction. If this is the case please Contact Us as these situations are handled on a case by case basis.
 
If there are any questions, concerns, or doubts about return eligibility please Contact Us and we would be more than happy to assist you.

This page and policy were last updated: July 14th 2023

FAQs

This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines.

Our kits include all of the solid metal lines for that section of the vehicle.

We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.

  • Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.
  • If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly.

Yes but you will need to order in advance. All of our items are not stocked at our location. So please place your order online and we will notify you when it is ready for pick up.

Unfortunately we cannot offer single lines outside of kits

Yes, all are covered by the manufacturer's standard warranty. Most warranties cover the cost of parts. Any installation or other fees are non-refundable.

Online we accept PayPal and all major Credit Cards. If your are picking an item up we gladly accept cash.

We can only ship to your confirmed address in PayPal or your billing address if you pay with a credit card.

Orders typically Arrive within 3 to 10 days depending if it is a stocked item or something we have manufactured at time of sale.

Yes please send us a message through our custom orders page.

Yes, but items sent out of the continental U.S. may incur additional charges based on their destination

The left and right sides on a vehicle are determined as though you were sitting in the driver's seat. The left is the driver's side, and the right is the passenger's side.

Check it again tomorrow. It takes up to 1 day for the carrier to give status and a delivery date. UPS and FedEx provide delivery dates, USPS usually does not but they take no longer than 5 business days.

Yes! Thank you for your military service!

Still have a question or concern?  Please contact use our contact us form!

Yes! Thank you for your military service!

Warranty Information

Customer service is our top priority and because we value your time and energy we ask you to visit our Contact Us page and reach out so that we may assist you in finding the correct warranty for your product. Please include your name, the name on the order, the order number, and the SKU of the product to ensure the quickest and most accurate response to your inquiry.

Product Notices

*NOTE: Product images may not reflect actual product appeareance.