Mass Air Flow Sensor, LH 2.4
Walker Products 2451097 - 142173
This item is not currently in our main warehouse which could delay processing. We have other brands or versions of this product available that can ship sooner than this one.
Product Description
Product Fitment Notes & Potential Issues
Most of these models are equipped with a thermostat controlled air flap in the air filter housing. This system is designed to speed up engine warm up (for emissions purposes) but if the thermostat fails, it diverts hot air full-time from the exhaust manifold through the air mass meter and will cook the MAF sensor electronics.
We highly recommend you replace the air filter thermostat at the same time as the MAF (air mass) sensor. See Recommended Products below.
Fits cars with LH 2.4 engine management, from 1989 and up. 1989 is a crossover year, with the older LH 2.2 gradually phasing out at the same time LH 2.4 was entering service. If you have a 1989 model, check the part numbers on your ECU or MAF, or check for your under-hood diagnostic port near the left (US driver's side) strut tower or the 3-pin crankshaft position sensor on top of the transmission where it bolts to the engine. See the attached tech tip below if you need help identifying LH 2.2 versus LH 2.4.
Technical Tips & Articles
About Walker Products
Walker Products began supplying the fuel system needs of the automotive industry in 1946. Today, Walker is one of the largest privately owned manufacturers of fuel system components and engine sensors.
Walker serves major Original Equipment Manufacturers, co-manufacturers, traditional aftermarket distributors, rebuilders, and retail customers in the automotive, Othermotive®, and heavy duty fuel sensor, engine sensor, and exhaust sensor markets worldwide.
Walker is committed to supplying products manufactured to meet or exceed OEM standards and specifications, backed by their in-house manufacturing, product management, and engineering staff to ensure precise accuracy in the production of the highest quality parts, vehicle applications, and technical support.
Walker serves both the quality aftermarket with their "350" line of standard replacement oxygen sensors made in-house, and the Original Equipment Supply (OES) market with their "250" line of sensors supplied from OEMs like Bosch and Denso: any 250-branded Walker O2 sensor features an OEM sensor element with Walker's own supplied wiring pigtail, giving you Volvo Blue Box quality at a significant discount.
Vehicle Fitment Guide
| Year | Make | Model | Trim | Chassis | Bodystyle | Engine | Fuelsys | Drive | Transmission |
|---|---|---|---|---|---|---|---|---|---|
| 1993 | VOLVO | 240 | NON-TURBO | 200 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW70 |
| 1993 | VOLVO | 240 | NON-TURBO | 200 | 4 DR SEDAN | B230F | LH 2.4 | RWD | M47 |
| 1993 | VOLVO | 240 | NON-TURBO | 200 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW70 |
| 1993 | VOLVO | 240 | NON-TURBO | 200 | 5 DR WAGON | B230F | LH 2.4 | RWD | M47 |
| 1992 | VOLVO | 240 | NON-TURBO | 200 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW70 |
| 1992 | VOLVO | 240 | NON-TURBO | 200 | 4 DR SEDAN | B230F | LH 2.4 | RWD | M47 |
| 1992 | VOLVO | 240 | NON-TURBO | 200 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW70 |
| 1992 | VOLVO | 240 | NON-TURBO | 200 | 5 DR WAGON | B230F | LH 2.4 | RWD | M47 |
| 1991 | VOLVO | 240 | NON-TURBO | 200 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW70 |
| 1991 | VOLVO | 240 | NON-TURBO | 200 | 4 DR SEDAN | B230F | LH 2.4 | RWD | M47 |
| 1991 | VOLVO | 240 | NON-TURBO | 200 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW70 |
| 1991 | VOLVO | 240 | NON-TURBO | 200 | 5 DR WAGON | B230F | LH 2.4 | RWD | M47 |
| 1990 | VOLVO | 240 | NON-TURBO | 200 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW70 |
| 1990 | VOLVO | 240 | NON-TURBO | 200 | 4 DR SEDAN | B230F | LH 2.4 | RWD | M47 |
| 1990 | VOLVO | 240 | NON-TURBO | 200 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW70 |
| 1990 | VOLVO | 240 | NON-TURBO | 200 | 5 DR WAGON | B230F | LH 2.4 | RWD | M47 |
| 1989 | VOLVO | 240 | NON-TURBO | 200 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW70 |
| 1989 | VOLVO | 240 | NON-TURBO | 200 | 4 DR SEDAN | B230F | LH 2.4 | RWD | M47 |
| 1989 | VOLVO | 240 | NON-TURBO | 200 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW70 |
| 1989 | VOLVO | 240 | NON-TURBO | 200 | 5 DR WAGON | B230F | LH 2.4 | RWD | M47 |
| 1992 | VOLVO | 740 | NON-TURBO | 700 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW70 |
| 1992 | VOLVO | 740 | NON-TURBO | 700 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW70 |
| 1992 | VOLVO | 740 | TURBO | 700 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1992 | VOLVO | 740 | TURBO | 700 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | M46 |
| 1992 | VOLVO | 740 | TURBO | 700 | 5 DR WAGON | B230FT | LH 2.4 | RWD | AW71 |
| 1992 | VOLVO | 740 | TURBO | 700 | 5 DR WAGON | B230FT | LH 2.4 | RWD | M46 |
| 1991 | VOLVO | 740 | NON-TURBO | 700 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW70 |
| 1991 | VOLVO | 740 | NON-TURBO | 700 | 4 DR SEDAN | B230F | LH 2.4 | RWD | M47 |
| 1991 | VOLVO | 740 | NON-TURBO | 700 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW70 |
| 1991 | VOLVO | 740 | NON-TURBO | 700 | 5 DR WAGON | B230F | LH 2.4 | RWD | M47 |
| 1991 | VOLVO | 740 | TURBO | 700 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1991 | VOLVO | 740 | TURBO | 700 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | M46 |
| 1991 | VOLVO | 740 | TURBO | 700 | 5 DR WAGON | B230FT | LH 2.4 | RWD | AW71 |
| 1991 | VOLVO | 740 | TURBO | 700 | 5 DR WAGON | B230FT | LH 2.4 | RWD | M46 |
| 1990 | VOLVO | 740 | NON-TURBO | 700 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW70 |
| 1990 | VOLVO | 740 | NON-TURBO | 700 | 4 DR SEDAN | B230F | LH 2.4 | RWD | M47 |
| 1990 | VOLVO | 740 | NON-TURBO | 700 | 4 DR SEDAN | B234F | LH 2.4 | RWD | AW72 |
| 1990 | VOLVO | 740 | NON-TURBO | 700 | 4 DR SEDAN | B234F | LH 2.4 | RWD | M46 |
| 1990 | VOLVO | 740 | NON-TURBO | 700 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW70 |
| 1990 | VOLVO | 740 | NON-TURBO | 700 | 5 DR WAGON | B230F | LH 2.4 | RWD | M47 |
| 1990 | VOLVO | 740 | NON-TURBO | 700 | 5 DR WAGON | B234F | LH 2.4 | RWD | AW72 |
| 1990 | VOLVO | 740 | NON-TURBO | 700 | 5 DR WAGON | B234F | LH 2.4 | RWD | M46 |
| 1990 | VOLVO | 740 | TURBO | 700 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1990 | VOLVO | 740 | TURBO | 700 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | M46 |
| 1990 | VOLVO | 740 | TURBO | 700 | 5 DR WAGON | B230FT | LH 2.4 | RWD | AW71 |
| 1990 | VOLVO | 740 | TURBO | 700 | 5 DR WAGON | B230FT | LH 2.4 | RWD | M46 |
| 1989 | VOLVO | 740 | NON-TURBO | 700 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW70 |
| 1989 | VOLVO | 740 | NON-TURBO | 700 | 4 DR SEDAN | B230F | LH 2.4 | RWD | M47 |
| 1989 | VOLVO | 740 | NON-TURBO | 700 | 4 DR SEDAN | B234F | LH 2.4 | RWD | AW72 |
| 1989 | VOLVO | 740 | NON-TURBO | 700 | 4 DR SEDAN | B234F | LH 2.4 | RWD | M46 |
| 1989 | VOLVO | 740 | NON-TURBO | 700 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW70 |
| 1989 | VOLVO | 740 | NON-TURBO | 700 | 5 DR WAGON | B230F | LH 2.4 | RWD | M47 |
| 1989 | VOLVO | 740 | NON-TURBO | 700 | 5 DR WAGON | B234F | LH 2.4 | RWD | AW72 |
| 1989 | VOLVO | 740 | NON-TURBO | 700 | 5 DR WAGON | B234F | LH 2.4 | RWD | M46 |
| 1989 | VOLVO | 740 | TURBO | 700 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1989 | VOLVO | 740 | TURBO | 700 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | M46 |
| 1989 | VOLVO | 740 | TURBO | 700 | 5 DR WAGON | B230FT | LH 2.4 | RWD | AW71 |
| 1989 | VOLVO | 740 | TURBO | 700 | 5 DR WAGON | B230FT | LH 2.4 | RWD | M46 |
| 1990 | VOLVO | 760 | NON-TURBO | 700 | 4 DR SEDAN | B280F | LH 2.4 | RWD | AW71 |
| 1990 | VOLVO | 760 | NON-TURBO | 700 | 5 DR WAGON | B280F | LH 2.4 | RWD | AW71 |
| 1990 | VOLVO | 760 | TURBO | 700 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1990 | VOLVO | 760 | TURBO | 700 | 5 DR WAGON | B230FT | LH 2.4 | RWD | AW71 |
| 1991 | VOLVO | 780 | TURBO | 700 | 2 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1990 | VOLVO | 780 | TURBO | 700 | 2 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1995 | VOLVO | 940 | NON-TURBO | 900 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW71 |
| 1995 | VOLVO | 940 | NON-TURBO | 900 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW71 |
| 1995 | VOLVO | 940 | TURBO | 900 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1995 | VOLVO | 940 | TURBO | 900 | 5 DR WAGON | B230FT | LH 2.4 | RWD | AW71 |
| 1994 | VOLVO | 940 | NON-TURBO | 900 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW71 |
| 1994 | VOLVO | 940 | NON-TURBO | 900 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW71 |
| 1994 | VOLVO | 940 | TURBO | 900 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1994 | VOLVO | 940 | TURBO | 900 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | M90 |
| 1994 | VOLVO | 940 | TURBO | 900 | 5 DR WAGON | B230FT | LH 2.4 | RWD | AW71 |
| 1994 | VOLVO | 940 | TURBO | 900 | 5 DR WAGON | B230FT | LH 2.4 | RWD | M90 |
| 1993 | VOLVO | 940 | NON-TURBO | 900 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW71 |
| 1993 | VOLVO | 940 | NON-TURBO | 900 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW71 |
| 1993 | VOLVO | 940 | TURBO | 900 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1993 | VOLVO | 940 | TURBO | 900 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | M46 |
| 1993 | VOLVO | 940 | TURBO | 900 | 5 DR WAGON | B230FT | LH 2.4 | RWD | AW71 |
| 1993 | VOLVO | 940 | TURBO | 900 | 5 DR WAGON | B230FT | LH 2.4 | RWD | M46 |
| 1992 | VOLVO | 940 | NON-TURBO | 900 | 4 DR SEDAN | B230F | LH 2.4 | RWD | AW70 |
| 1992 | VOLVO | 940 | NON-TURBO | 900 | 4 DR SEDAN | B234F | LH 2.4 | RWD | AW72 |
| 1992 | VOLVO | 940 | NON-TURBO | 900 | 4 DR SEDAN | B234F | LH 2.4 | RWD | M46 |
| 1992 | VOLVO | 940 | NON-TURBO | 900 | 5 DR WAGON | B230F | LH 2.4 | RWD | AW70 |
| 1992 | VOLVO | 940 | NON-TURBO | 900 | 5 DR WAGON | B234F | LH 2.4 | RWD | AW72 |
| 1992 | VOLVO | 940 | NON-TURBO | 900 | 5 DR WAGON | B234F | LH 2.4 | RWD | M46 |
| 1992 | VOLVO | 940 | SE (TURBO) | 900 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1992 | VOLVO | 940 | TURBO | 900 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1992 | VOLVO | 940 | TURBO | 900 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | M46 |
| 1992 | VOLVO | 940 | TURBO | 900 | 5 DR WAGON | B230FT | LH 2.4 | RWD | AW71 |
| 1992 | VOLVO | 940 | TURBO | 900 | 5 DR WAGON | B230FT | LH 2.4 | RWD | M46 |
| 1991 | VOLVO | 940 | NON-TURBO | 900 | 4 DR SEDAN | B234F | LH 2.4 | RWD | AW72 |
| 1991 | VOLVO | 940 | NON-TURBO | 900 | 4 DR SEDAN | B234F | LH 2.4 | RWD | M46 |
| 1991 | VOLVO | 940 | NON-TURBO | 900 | 5 DR WAGON | B234F | LH 2.4 | RWD | AW72 |
| 1991 | VOLVO | 940 | NON-TURBO | 900 | 5 DR WAGON | B234F | LH 2.4 | RWD | M46 |
| 1991 | VOLVO | 940 | SE (TURBO) | 900 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1991 | VOLVO | 940 | TURBO | 900 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | AW71 |
| 1991 | VOLVO | 940 | TURBO | 900 | 4 DR SEDAN | B230FT | LH 2.4 | RWD | M46 |
| 1991 | VOLVO | 940 | TURBO | 900 | 5 DR WAGON | B230FT | LH 2.4 | RWD | AW71 |
| 1991 | VOLVO | 940 | TURBO | 900 | 5 DR WAGON | B230FT | LH 2.4 | RWD | M46 |
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Shipping Estimate
Product Reviews
Policies, Warranty & FAQ
Product Fitment Notes & Potential Issues
Most of these models are equipped with a thermostat controlled air flap in the air filter housing. This system is designed to speed up engine warm up (for emissions purposes) but if the thermostat fails, it diverts hot air full-time from the exhaust manifold through the air mass meter and will cook the MAF sensor electronics.
We highly recommend you replace the air filter thermostat at the same time as the MAF (air mass) sensor. See Recommended Products below.
Fits cars with LH 2.4 engine management, from 1989 and up. 1989 is a crossover year, with the older LH 2.2 gradually phasing out at the same time LH 2.4 was entering service. If you have a 1989 model, check the part numbers on your ECU or MAF, or check for your under-hood diagnostic port near the left (US driver's side) strut tower or the 3-pin crankshaft position sensor on top of the transmission where it bolts to the engine. See the attached tech tip below if you need help identifying LH 2.2 versus LH 2.4.
Related Technical Articles
Available to Order means the item may not be in our warehouse but is readily available from one or more supplier warehouses. After you order it, we will get it for you ASAP.
Products from major brand names are almost always in stock in the manufacturer’s domestic warehouse. These suppliers have good fill rates, but even if they are out of stock, we may be able to source it from a variety of alternative wholesale sources.
We are at the most a week away from all these warehouses, usually much less. Does that mean we will always have your product available within that window? Honestly, we can't promise that but we’ll do everything we can to get your parts to you in a timely manner.






