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Description
B&M Adjustable Modulator - GM TH350/TH400 Automatic Transmissions - 20234Overview: 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
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
Application:
| 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 |
Specs:
| 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 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 551 reviews
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Product Reviews
★★★★★ 4
Works Great but the price is rising!
Anua Azelaic Acid is a very good serum. Both my daughter and I use it regularly. My daughter has severe rosacea, and this has helped calm her skin significantly her redness is almost gone. For me, it has also made a noticeable difference by reducing redness and giving my skin a healthy glow. We both use it at night, and it’s definitely very soothing and calming. The formula is gentle, lightweight, and works really well for sensitive skin without causing irritation.
However, the only downside is the price, it seems to have increased quite a bit recently, which is concerning. I bought a couple during Amazon Prime Day, which worked out really well. For a relatively simple azelaic acid serum, the price increase feels a bit steep.
If the price continues to rise, I may need to look for a more budget-friendly alternative. Otherwise, it’s a really great serum that delivers great results.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
★★★★★ 5
DERM APPROVED!
I am obsessed with this product!! This feels very luxurious on my skin and does not pill like other products I have had in the past. I have noticed a significant improvement in the background redness in my skin. As someone who works in derm and values good ingredients and products that actually work... I can confidently say that this is the best OTC azelaic acid product I have tried out. It sits very nicely under my moisturizer and does not dehydrate my skin like other azelaic acid products have done in the past. HIGHLY RECOMMEND
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
★★★★★ 5
A Game Changer for Sensitive Skin
I use this serum every single day, and it has become one of the most important products in my skincare routine. I have very sensitive skin and cannot tolerate stronger active ingredients such as retinol or high-strength acids, so finding something effective but gentle has been incredibly important.
This serum has helped calm redness, reduce inflammation, and noticeably improve my skin’s overall appearance and comfort. After dealing with a prolonged inflammatory skin condition, this product made a significant difference and helped restore my skin barrier.
The formula feels soothing, hydrating, and non-irritating. If you have sensitive or reactive skin and are looking for a gentle product to help with redness and uneven texture, I highly recommend giving this serum a try.
Photos attached: The green bottle is the product and the second photo includes my favorite additions.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
★★★★★ 5
Perfect for Acne-Prone Skin!
This serum has honestly been a great addition to my routine for redness and post-acne marks. The texture is lightweight, hydrating, and doesn’t feel sticky or heavy on my oily/acne-prone skin.
I have sensitive skin with a focus on barrier protection, and this didn’t irritate my skin at all. It layers beautifully with the rest of my skincare and leaves my skin looking calmer and smoother over time. AND, it doesn’t have a smell!!
Definitely one of my favorite azelaic acid serums I’ve tried.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
Great product with unexpected results and skincare benefits
Size: 25 Count (Pack of 1)
I have been reading about Micellar water products for a couple of years, and finally purchased these wipes to try. I am currently working very long hours and the selling point for these wipes was that they weren't soap-based, and didn't require a toner after using. I keep them on my night stand and take my makeup off with them prior to going to bed. (I do not use them for removing mascara - I use another product for that.)
The biggest point I want to share is that I have been using these wipes exclusively for makeup removal for a little more than two weeks. I have had a stubborn blackhead on my nose for a good 20 years that wouldn't budge, no matter how often I used exfoliating products, and I've invested a lot of money in high end exfoliators in an attempt to make that spot go away. It has grown larger over the years, and was a skincare peeve of mine. I noticed a couple of days ago that that blackhead is beginning to break down and get smaller. I thought at first that I was imagining it, but that blackhead is honestly a good two-thirds gone. This is just from using these wipes! I would never have predicted that something this simple and quite soft and insubstantial as a disposable face wipe would have such effective results for blackhead breakdown, but they're doing the trick. I have noticed smaller blackheads on my chin area are also melting away. I predict that in another few weeks of use, my skin is going to be as close to blackhead-free as it is humanly possible to achieve. (For the record, I don't have a lot of blackheads - just a handful that have taken up residence over the years and refused to budge, getting larger with age.)
These are safe for my sensitive skin, and have exfoliating benefits that I wouldn't ever have expected or predicted. Full disclosure: I do spend a good 3-5 minutes using a single wipe on my face, neck, and décolletage, scrubbing with the nubby side (there is a nubby, exfoliating side, and smooth side to each wipe) and using the whole cloth in sections until I have used it all. Finally, I also use it on the tops of my hands. I definitely get my money's worth out of each wipe! I wholeheartedly encourage people to try this product. I now have it on Auto-Ship status, as I don't want to ever be without these wipes in my skincare arsenal.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2016
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