Audi Fox Air Pump for Sale | OEM Used Secondary Air Injection Pump (Smog Pump)
$149.00
At a Glance
- Condition: OEM used, mechanical and electrical / drive function tested
- Availability: In stock, vintage Audi Fox air pump available (extremely limited availability for vintage Audi Fox parts)
- Shipping: Free shipping to all 50 states, 5 to 10 business days
- Part verified as belt-driven secondary air injection pump (smog pump) for Audi Fox applications
- Application confirmed (Audi Fox B1 generation 1973-1979 US-market production years)
- Pump rotation function verified (smooth rotation without binding or grinding)
- Drive pulley condition documented (V-belt pulley for engine accessory drive)
- Air output verified (pump generates positive air pressure when driven)
- External housing condition documented (no cracks, no impact damage, no significant corrosion)
- Mounting bracket holes verified for fit (Audi Fox specific)
- NOTE: The Audi Fox is the US-market name for the Audi 80 B1 generation
- 15 day replacement warranty on component defects
Description
About the Audi Fox Air Pump
Looking for a replacement Audi Fox air pump? Part Nests sources OEM used belt-driven secondary air injection pumps (also called smog pumps) for vintage Audi Fox applications. The Audi Fox was the US-market name for the Audi 80 B1 generation (1973-1979 US-market production), the first-generation Audi 80 compact sedan platform that established the modern Audi compact executive sedan format. The Fox was the predecessor to the Audi 4000 (per our Audi 4000 Quattro A/C Compressor listing), which was itself the predecessor to the Audi 80 B3 / B4 (per our Audi 80 Series A/C Condenser listing) and ultimately the Audi A4 (per our Audi A4 A/C Evaporator listing). The secondary air injection pump (smog pump) is a 1970s-era emissions control component that pumps fresh air into the exhaust system to support catalytic converter operation and reduce emissions.
Audi Fox Air Pump Specifications
- Type: Belt-driven mechanical secondary air injection pump (smog pump)
- Drive: Engine accessory drive belt (V-belt configuration on this vintage Audi application)
- Function: Pumps fresh air into exhaust system to support catalytic converter operation and reduce emissions
- Internal design: Vane-type or rotor-type air pump (typical for 1970s-era smog pumps); driven by engine accessory belt
- Output: Positive air pressure delivered through hose to exhaust system air injection points
- Mounting: Specific to Audi Fox B1 engine bay configuration; verify mounting bracket compatibility
- External housing: Inspected for cracks, impact damage, and corrosion
- Drive pulley: V-belt pulley with belt engagement surface
- Application: Audi Fox B1 (US-market production 1973-1979)
Audi Fox Platform Context
- Audi Fox B1 (1973-1979 US-market): The first Audi 80 generation in US market, sold under the “Audi Fox” nameplate; established the modern Audi compact sedan format
- Audi 80 B1 international: The Audi Fox was the US-market name for the Audi 80 B1 generation, which was sold as “Audi 80” in most international markets
- Audi 4000 successor: The Audi Fox was succeeded by the Audi 4000 starting in 1980
- Audi 80 B3 / B4 later successors: The Audi 4000 was succeeded by the Audi 80 B3 / B4
- Audi A4 ultimate successor: The Audi 80 was succeeded by the Audi A4 starting with the 1996 model year
- Vintage status: The Audi Fox is now a 46-52 plus year old vintage vehicle; parts availability is extremely limited
- Enthusiast community: Niche but dedicated Audi Fox / Audi 80 B1 enthusiast community; significant in Audi heritage
Secondary Air Injection (Smog Pump) Function Context
- Emissions control history: Secondary air injection (smog pump) was introduced in the early 1970s as part of the first generation of emissions control technology following the 1970 Clean Air Act
- Function: Pumps fresh air into the exhaust system either at the exhaust manifold or downstream of the catalytic converter
- Catalyst support: The fresh air supports oxidation of hydrocarbons and carbon monoxide in the exhaust, which the catalytic converter then processes to reduce emissions
- Cold-start importance: Smog pump operation is particularly important during cold-start when catalytic converter temperatures are below light-off threshold; the fresh air helps maintain combustion of unburned fuel
- 1970s-1980s technology: Belt-driven mechanical smog pumps were standard 1970s-1980s emissions control technology; later vehicles transitioned to electric secondary air injection pumps and eventually integrated emissions control strategies that eliminate the smog pump entirely
- Removal considerations: Some enthusiast modifications involve removing the smog pump; however, removal may be illegal in emissions-controlled states (California, New York, etc.) and may cause check engine codes; verify legal requirements before considering removal
Common Vintage Smog Pump Failure Modes
- Internal pump wear: Vane or rotor wear at high mileage; 46+ year old pumps often have significant internal wear
- Bearing failure: Pump bearings can fail with age; bearing noise (squeal, grinding) is the warning sign
- Drive pulley wear: V-belt pulley engagement surface can wear at high mileage
- External housing corrosion: 46+ year old aluminum or steel housings often show corrosion
- Air output reduction: Aged smog pumps may produce insufficient air pressure
- Mounting bracket damage: 46+ year old mounting brackets may show damage or corrosion
Vintage Audi Parts Context
The Audi Fox Air Pump (this listing) is one of multiple vintage Audi parts in our catalog. For vintage Audi 4000 / 80 / 90 platform context, our Audi 4000 Quattro A/C Compressor covers the Audi 4000 Quattro B2 platform (the Audi Fox successor); our Audi 80 Series A/C Condenser covers the Audi 80 B3 / B4 platform; our Audi 90 Series A/C Condenser Fan covers the Audi 90 B3 / B4 platform. For modern Audi platform context: Audi A4 A/C Evaporator covers the Audi A4 B5 / B6 / B7 / B8 / B9 (the ultimate Audi 80 / Fox lineage successor). The Audi Fox represents the foundational vintage Audi compact sedan applied to the early 1970s era of Audi US-market entry.
Vehicle Compatibility
| Vehicle | Compatibility |
|---|---|
| Audi Fox (B1 chassis) | 1973-1978 US market with factory emissions system, the primary application |
| Audi 80 (B1 chassis, European) | 1972-1978 with secondary air injection system |
| Audi Fox Wagon | Estate/wagon variant of the same chassis |
| Related (Different Chassis) | Audi 4000 B2 (1980-1987), see our Audi 4000 Quattro A/C Compressor listing; Audi 80/90 B3 (1986-1991), see our Audi 80 Series A/C Condenser listing |
| Verification | Verify specific year and US/European market variant |
Why Buy From Part Nests
- Part verified as belt-driven secondary air injection pump (smog pump) for Audi Fox applications
- Application confirmed (Audi Fox B1 generation 1973-1979 US-market production years)
- Pump rotation function verified (smooth rotation without binding or grinding)
- Drive pulley condition documented (V-belt pulley for engine accessory drive)
- Air output verified (pump generates positive air pressure when driven)
- External housing condition documented (no cracks, no impact damage, no significant corrosion)
- Mounting bracket holes verified for fit (Audi Fox specific)
- Free shipping to all 50 states
- 15 day replacement warranty on component defects
- Vintage Audi parts experience and Audi Fox B1 / Audi 80 B1 platform knowledge from our support team
- Call (855) 634-4447 to verify application against your VIN before you order.
15 Day Replacement Warranty
Every used Audi Fox Air Pump purchased through Part Nests carries a 15 day replacement warranty starting on the delivery date.
What Is Covered
- Component defects already present when the pump arrives
- Internal pump mechanical failures within 15 days from installation beyond what was disclosed
- Bearing failures within 15 days from installation
- Drive pulley failures within 15 days from installation
- External housing crack failures within 15 days from installation
- Incorrect part shipped (different Audi application than specified) due to an error on our end
What Is Not Covered
- Damage caused during installation
- Damage from incorrect belt tension or belt alignment
- Damage from contaminated air intake (debris or moisture in air supply)
- Damage from extended operation with collapsed or damaged air hoses
- Damage from contact with hot exhaust components
- Damage from neglected accessory drive belt service (worn or improperly tensioned belt can damage pump)
- Aged but functional condition (this is a 46+ year old vintage component; some performance reduction relative to new is expected)
- Labor expenses of any kind
To start a warranty claim, reach us within 15 days of delivery at (855) 634-4447.
- Part Verified: Belt-driven secondary air injection pump (smog pump) for Audi Fox
- Application Confirmed: Audi Fox B1 1973-1979 US-market production
- Pump Rotation Function: Smooth rotation without binding or grinding
- Drive Pulley Condition: V-belt pulley engagement surface documented
- Air Output Verified: Positive air pressure when driven
- External Housing Documented: No cracks / impact damage / significant corrosion
- Mounting Bracket Verified: Audi Fox specific fit confirmed
- 15 Day Replacement Cover: Component defects protected from delivery onward
Additional information
| Brand | Audi |
|---|---|
| part-type | Secondary Air Injection Pump (smog pump) |
| vehicle-application | Audi Fox B1 chassis 1973-1978 (US market name for Audi 80 B1) |
| material | Metal or high-durability plastics |
| drive-type | Belt-driven mechanical pump |
| drive-mechanism | Belt connected to the engine's crankshaft |
| function | Emission control by introducing fresh air into the exhaust system |
| cold-start-assistance | Enhances emissions control during cold starts |
| check-valve | Included to prevent exhaust gas backflow |
| clean-air-act-context | Part of mandated emissions controls (1970s) |
| engine | 1.5L inline-4 (ZA engine code) |
| price | $149.00 |
Belt-driven secondary air injection pump (smog pump) for vintage Audi Fox applications. The Audi Fox Air Pump is an OEM used belt-driven secondary air injection pump (also called smog pump) for vintage Audi Fox applications. The Audi Fox was the US-market name for the Audi 80 B1 generation (1973-1979 US-market production), the first-generation Audi 80 compact sedan platform. The Fox was the predecessor to the Audi 4000. The secondary air injection pump is a 1970s-era emissions control component that pumps fresh air into the exhaust system to support catalytic converter operation and reduce emissions. Type: belt-driven mechanical secondary air injection pump; drive: engine accessory drive V-belt; internal design: vane-type or rotor-type air pump; output: positive air pressure delivered through hose to exhaust system air injection points.
US-market name for Audi 80 B1, predecessor to Audi 4000 / 80 / A4 lineage. Audi Fox B1 (1973-1979 US-market): the first Audi 80 generation in US market, sold under the 'Audi Fox' nameplate; established the modern Audi compact sedan format. Audi 80 B1 international: the Audi Fox was the US-market name for the Audi 80 B1 generation, which was sold as 'Audi 80' in most international markets. Audi 4000 successor: the Audi Fox was succeeded by the Audi 4000 starting in 1980. Audi 80 B3 / B4 later successors: the Audi 4000 was succeeded by the Audi 80 B3 / B4. Audi A4 ultimate successor: the Audi 80 was succeeded by the Audi A4 starting 1996. Vintage status: now a 46-52 plus year old vintage vehicle; parts availability is extremely limited.
Pumps fresh air into exhaust to support catalytic converter operation. Emissions control history: secondary air injection (smog pump) was introduced in the early 1970s as part of the first generation of emissions control technology following the 1970 Clean Air Act. Function: pumps fresh air into the exhaust system either at the exhaust manifold or downstream of the catalytic converter. Catalyst support: the fresh air supports oxidation of hydrocarbons and carbon monoxide in the exhaust, which the catalytic converter then processes to reduce emissions. Cold-start importance: smog pump operation is particularly important during cold-start when catalytic converter temperatures are below light-off threshold. 1970s-1980s technology: belt-driven mechanical smog pumps were standard 1970s-1980s emissions control technology. Removal considerations: removal may be illegal in emissions-controlled states; verify legal requirements before considering removal.
Pump rotation, drive pulley, air output, external housing, mounting fit. Each Audi Fox Air Pump is verified before sale. Pump rotation function: verified for smooth rotation without binding or grinding. Drive pulley condition: documented for V-belt pulley engagement surface. Air output: verified for positive air pressure when driven. External housing condition: documented for no cracks, no impact damage, no significant corrosion. Mounting bracket holes: verified for fit with Audi Fox specific mounting positions.
Internal wear, bearing failure, pulley wear, housing corrosion, output reduction. Common failure modes: internal pump wear (vane or rotor wear at high mileage; 46+ year old pumps often have significant internal wear), bearing failure (pump bearings can fail with age; bearing noise squeal or grinding is the warning sign), drive pulley wear (V-belt pulley engagement surface can wear at high mileage), external housing corrosion (46+ year old aluminum or steel housings often show corrosion), air output reduction (aged smog pumps may produce insufficient air pressure), mounting bracket damage (46+ year old mounting brackets may show damage or corrosion).
Fox / 4000 / 80 / A4 lineage spans multiple platforms in our catalog. The Audi Fox Air Pump (this listing) is one of multiple vintage Audi parts in our catalog. For vintage Audi platform context: Audi 4000 Quattro A/C Compressor covers the Audi 4000 Quattro B2 platform (the Audi Fox successor); Audi 80 Series A/C Condenser covers the Audi 80 B3 / B4 platform; Audi 90 Series A/C Condenser Fan covers the Audi 90 B3 / B4 platform. For modern Audi platform context: Audi A4 A/C Evaporator covers the Audi A4 B5 / B6 / B7 / B8 / B9 (the ultimate Audi 80 / Fox lineage successor). The Audi Fox represents the foundational vintage Audi compact sedan.
V-belt inspection, hose inspection, exhaust manifold inspection. After acquiring a used Audi Fox air pump, plan for these items. V-belt inspection: inspect engine accessory drive V-belt; replace if showing wear, cracking, or glazing. Air hose inspection: inspect air supply hoses for cracks, collapses, or restrictions; replace as necessary. Exhaust manifold air injection point inspection: inspect exhaust manifold air injection ports for blockage or damage. Pump mounting bracket inspection: inspect mounting bracket for damage or corrosion. Belt tension adjustment: properly tension the V-belt after installation. Operational verification: verify pump operation by feeling for positive air output when engine is running.
No. There is no core return required.
2 reviews for Audi Fox Air Pump for Sale | OEM Used Secondary Air Injection Pump (Smog Pump)
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Wolfram K. –
Got it for an Audi Fox Air Pump restore. Delivery beat what most yards quote.
Hildegard P. –
Fit my Audi Fox Air Pump without any drama. Would order again.