Spring Maintenance: Essential Prep for Your Ride!
24/7 Customer service
USD
Add your vehicle
Address
Login
Cart
Item
$0.00
Engine
Body & Lamp Assembly
Brake & Wheel Parts
Drivetrain
Heating & Cooling
Exterior
Suspension & Steering
Rewards program
About us
Blog
Home
›
Brands
›
Walker Products
›
Knock Sensor
Guaranteed Fit
Exact fit for your specific vehicle application.
Free Shipping
Free standard shipping, no minimum required.
90-Day Free Returns
Return your purchase for free within 90 days.
24/7 Support
Instant help from our support team, anytime.
Add your vehicle to ensure fitment
Required Fields
Make/Model
VIN
Save
Walker Products Knock Sensor
Sort by
Best Match
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
1
3
9
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
S4,A4 Quattro,A4,Passat,A6,A6 Quattro,Allroad Quattro
Check if this fits your vehicle
$
71.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
1
4
5
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
TT,TT Quattro
Check if this fits your vehicle
$
75.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
1
3
6
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
A8 Quattro,Phaeton
Check if this fits your vehicle
$
52.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
1
4
2
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
TT,TT Quattro
Check if this fits your vehicle
$
64.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
1
7
8
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
XC90,S60,V70
Check if this fits your vehicle
$
119.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
1
6
1
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
Accent,Elantra,Tiburon
Check if this fits your vehicle
$
52.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
1
5
1
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
,
R
i
g
h
t
P
a
s
s
e
n
g
e
r
S
i
d
e
TT,A8 Quattro,S4,Golf R,Q3,S5,Q5,Q7,A6 Quattro,TTS Quattro,A5 Quattro,A3,Panamera,A4,A5,A6,Beetle,SQ5,Tiguan Limited,A7 Quattro
Check if this fits your vehicle
$
42.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
1
4
9
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
CLS500,C32 AMG,ML55 AMG,R500,S65 AMG,SL500,CLK320,SL600,SLK55 AMG,CL65 AMG,E430,C320,Crossfire,ML320,C240,CLK500,ML500,C280,E55 AMG,S420
Check if this fits your vehicle
$
44.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
1
7
7
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
850,C70,S70,V70
Check if this fits your vehicle
$
78.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
2
7
7
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
C36 AMG,C220,C230,C280,S320,SLK230,Astra,E320,SL320
Check if this fits your vehicle
$
38.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
1
9
2
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
Sky,9-5,Vue,Malibu,Cobalt,Regal,G5,G6,Solstice,HHR,Equinox,Terrain,Verano,Aura,LaCrosse
Check if this fits your vehicle
$
45.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
2
8
5
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
9-2X
Check if this fits your vehicle
$
85.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
3
2
5
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
Pathfinder,QX60,Frontier
Check if this fits your vehicle
$
232.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
2
6
9
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
Sentra,Altima
Check if this fits your vehicle
$
116.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
2
7
0
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
XG300
Check if this fits your vehicle
$
51.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
2
8
4
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
9-2X
Check if this fits your vehicle
$
73.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
2
7
1
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
Santa Fe,Sedona,Amanti,XG350
Check if this fits your vehicle
$
53.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
2
7
2
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
6
Check if this fits your vehicle
$
55.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
2
8
9
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
Santa Fe,Sedona,Amanti,Azera,Entourage,Veracruz,Sonata
Check if this fits your vehicle
$
54.99
Dispatch within 1 business day
VIEW DETAIL
W
a
l
k
e
r
P
r
o
d
u
c
t
s
2
4
2
-
1
3
0
4
I
g
n
i
t
i
o
n
K
n
o
c
k
(
D
e
t
o
n
a
t
i
o
n
)
S
e
n
s
o
r
,
L
e
f
t
D
r
i
v
e
r
S
i
d
e
Borrego,Genesis,Sorento
Check if this fits your vehicle
$
62.99
Dispatch within 1 business day
VIEW DETAIL
1
2
3
4
5
...
6
7
8
9
Page 1 of 9