🚗 Elevate your classic Buick’s ride—comfort and control, perfectly tuned.
The Monroe Max-Air MA789 is a rear air adjustable shock absorber designed for select Buick, Chevrolet, Pontiac, Oldsmobile, GMC, and Nissan models from the 1970s and 80s. Featuring up to 150 PSI air pressure adjustment, it maintains ride height under loads up to 1,200 lbs. Built with hardened piston rods, sintered iron pistons, and all-weather fluid, it ensures durability, smooth handling, and seamless integration with factory or manual air systems.
| Brand | Monroe |
| Auto Part Position | Rear |
| Style | Compression |
| Vehicle Service Type | Car |
| Exterior Finish | Painted |
| Material | Iron |
| Extended Length | 28.26 Inches |
| OEM Part Number | MA789 |
| Global Trade Identification Number | 00048598031099 |
| UPC | 048598031099 |
| Manufacturer | Monroe Shocks & Struts |
| Model | Max-Air |
| Item Weight | 0.01 ounces |
| Product Dimensions | 21.1 x 7.9 x 3.4 inches |
| Country of Origin | China |
| Item model number | MA789 |
| Manufacturer Part Number | MA789 |
A**N
Fit well. Airlines too short.
Good fit. Included airlines were too short for the elcamino, so had to splice into the old lines.
E**R
Great for G-Body Cars
Have installed these on both my 79 Monte Carlo's and have no complaints. Pressure will bleed off after a week or so, but these aren't daily drivers and are a cheap alternative to getting the stance you want. IMPORTANT NOTE: These do include the air line kit, Monroe PN AK18. Don't waste your money buying an additional one.
C**R
affordable and good quality!
they are exactly how they described,I'll buy em again!!
J**L
bad buy
arrived missing pieces
A**S
Great product, easy install
Really helped my 86 elco, and easy install. No leaks so far, will update if anything fails.
A**O
OEM fit
Fits rigth working good
P**!
Great deal!
Look great!
R**O
I'm a little sad. I can't find the leak...
I bought this pair a few months ago and installed them in a timely fashion with supplied air line kit. Right from the beginning I noticed they would leak down after a couple of days. I go from 35psi down to 5 or 10 psi in as little as 3 days. I'll try soaping then again plus I bought an ultrasonic leak finder. Soap hasn't been working and am pessimistic about the ultrasonic product. I'm way past my return date. My last set on this car lasted 20 years. 1987 442 modified. If I can't figure this out, what shall I do? Cut bait and buy a different brand? ...signed. pretty bummed
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