TIME-SERT® PROFESSIONAL SPARK PLUG THREAD REPAIR KITS, PERMANENT RESULTS!

THE VERY BEST IN SPARK PLUG THREAD REPAIR KITS
NOTE: If the hole was previously REPAIRED with Helicoil/save-a-thread. Use our BIG-SERT for oversized spark plug repairs click here:
These kits are considered "Over the fender" you DO NOT have to remove the head. MEASURING INSERT LENGTH:
To measure correctly for the length of insert you need for your application.
Measure from
under the spark plug (Washer) or (middle of taper for tapered seat)
to the last thread (Not to the end of the electrode) .   
This will give you the correct length.
TIME-SERT
®  inserts cannot be shortened.
click here: or Spark plug measurement and determine correct size and length insert
 

   TIME-SERT spark plug thread repair permanent
 
Approved spark plug thread repair kit TIME-SERT
p/n 6604412 p/n 6604412E

SPARK PLUG TYPES

WASHER SEAT
SPARK PLUG
INSERTS
copper plated
TAPER SEAT
SPARK PLUG
INSERTS
silver plated

Video Instructions

LENGTH 

LENGTH
KIT SIZE PART NO PRICE INCH METRIC
(mm)

WASHER SEAT
PART NO

PRICE INCH METRIC
(mm)
TAPER SEAT
PART NO
PRICE
1/4-32
RC engines
Glow plug

6600142SP


N
ote: includes 5 inserts
4.57mm length
 

100.95 .180 4.57 66101421 2.81   ----- ----- ----- -----
KIT SIZE PART NO PRICE INCH METRIC
(mm)

WASHER  SEAT
PART NO

PRICE INCH METRIC
(mm)
TAPER SEAT
PART NO
PRICE
M10x1.0
RC Plane
1/4 Reach SHORT
Spark plug

6601010A


Note:

Includes 5 inserts 6.2mm length
 

 

.360
.472
.600
.905
 9.0
12.0
15.0
23.0
66140101
66140102
66140103
66140105
1.97
1.97
1.97
2.40
----- ----- ----- -----
M10x1.0 Standard
Spark plug
(notes)

 

6604010


Note: Inserts NOT included
 

131.92

M10x1.0 Standard
Spark plug
with Inserts

 

6604010-103


Note: includes 5 inserts
 

 
M10x1.0
Extended Version Sparkplug with Inserts Note

6604010EXT-133


Note: includes 5 inserts
 

 
M10x1.0
Special
Honda
Motorcycle
Sparkplug Kit
Honda Note

 

6604010E


Note: Inserts NOT included
 

247.83
 
KIT SIZE PART NO PRICE INCH METRIC
(mm)

WASHER  SEAT
PART NO

PRICE INCH METRIC
(mm)
TAPER SEAT
PART NO
PRICE

M10x1.0
Glow plug

Commonly used in Dodge Sprinter
Vans (notes)

6604010GP


Note: includes 5 inserts
 

295.32

.472  12.0 66140102 1.97        
KIT SIZE PART NO PRICE INCH METRIC
(mm)

WASHER  SEAT
PART NO

PRICE INCH METRIC
(mm)
TAPER SEAT
PART NO
PRICE
M10x1.25
Glow plug
DuraMax 6.6L
Diesel
2001-2010
(link)

6605000


Note:  includes 5 inserts
16.2mm length
 

312.12

.650

16.2

66110123ANF 4.91  

 

   
KIT SIZE PART NO PRICE INCH METRIC
(mm)

WASHER  SEAT
PART NO

PRICE INCH METRIC
(mm)
TAPER SEAT
PART NO
PRICE
M12x1.25
Standard
notes

6604212


Note: Inserts NOT
included

Note click here:
Ford Insert
 

139.50 .360
.600
.690
.866
 
  9.0
15.0
17.5
22.0

 
66142121
66142123
66142125
66142127
 




2.33

2.33
2.33
4.54



 

  21.0 66142126 4.70
M12x1.25
Standard

6604212-125


Includes:
2 inserts 9mm,
2 inserts 15mm,
2 inserts 17.5mm

 

 
M12x1.25
Deep hole

notes

6604212E

 
Note: Inserts NOT
included
 

209.08
M12x1.25
2008 & Up
Ford 3 valve
(notes
)

6604212H


Note: Includes 5 inserts
12x1.25x21mm length
 taper seat
 

242.24

KIT SIZE PART NO PRICE INCH

METRIC
(mm)

WASHER  SEAT
PART NO

PRICE INCH METRIC
(mm)
TAPER SEAT
PART NO
PRICE
M14x1.25
Short kit for 8mm length
(notes)

66014125F


Note: Includes 5 inserts
14x1.25x8mm length
 

128.89 .270
.320
.370
.430
.530
.600
.660
.905

07.0
08.0
09.4
11.0
13.5
15.0
16.8
23.0

66144121
66144123
66144125
66144127
66144113
66144129

66144111

66144112
1.99
1.99
1.99
1.99
2.40
2.40
2.40
4.54
.270
.400
.620
.660
.950
 
  7.0 
10.0
15.7
16.8
24.0
66144181
66144183
66144185
66144186
66144187





















4.75
4.75
4.75
4.75
4.70
M14x1.25
Sparkplug Standard
(notes)

6604412


Note: Inserts NOT
included
 

 166.61
M14x1.25
Sparkplug
Deep hole
(notes)

6604412E


Note: Inserts NOT
included

209.08

Sealer required
for all taper seat
inserts



p/n 6626020
25.60

M14x1.25
Imports
sparkplug
thread repair

(Detail notes)

6604412ER


 

209.08

Reduced - Extended

M14x1.25
Imports
sparkplug
thread repair

(Detail notes)

6604412E-111


 

223.80 

IMPORTS:

Spark Plug thread repair kit for Imports
Used in 3/4 reach gasket style spark plugs commonly used in Toyota,
Lexus, Honda, Acura, Bmw, Mercedes-benz, VW, Audi, Kia, Mini Cooper and
others that have a deep reach spark plug.
This kit includes 5 inserts p/n 66144111

 

M14x1.25

6604412E-185


 

244.00

IMPORT VEHICLES:

Spark plug thread repair for M14x1.25, most commonly used for Chevrolet and other Domestic vehicles that use tapered seat M14x1.25 spark plugs. For first time repairs only. Larger tooling and inserts are needed when a Helicoil or some other competitive brand has failed. Tooling is long enough for extended reach and can be used for near surface spark plug holes as well using the shorter wrench.

Kit includes
3 inserts p/n 66144185 (.70") and 2 inserts pn 66144183 (.40") for tapered seat plugs, meaning spark plugs without washers. Typically used for Chevrolet and other Domestic vehicles, not recommended for Ford 4.6, 5.4 and 6.8 Liters.

The tap in the wrench is approx. 8" in over all length using the longer wrench.

Time Sert 6604412E-185 Kit Includes the Following

   Wrenches, PN 66244192 and 66244182M different lengths.

   Step-Tap PN 66244191E

   Insert Driver PN 66244194E

   Seat Cutter PN 66244193E

Loctite #6626020

  Inserts - QTY 3 pn
66144185

   Inserts - QTY 2 pn 66144183

Washer Seat inserts not included, available separately

M14x1.25
Domestic
sparkplug
thread repair

(Detail notes)

6604412E-187


 

 

DOMESTIC VEHICLES:

M14x1.25 Taper Seat spark plug repair
Taper Seat Spark Plug thread repair kit General Motors, Chrysler, GMC and others.
First time repair only.

Includes: .945 - 24mm, .708 -15.7mm, .400 - 10mm reach Taper Seat inserts. tooling also
includes a mini wrench to use in tight areas. Sealer is included.
Inserts included 2 Each
p/n 66144187, p/n 66144185 & 2 inserts 66144183.
 

M14x1.25
Domestic
sparkplug
thread repair

(Detail notes)

6604412MINI


 

166.61

STANDARD KIT WITH MINI WRENCH

M14x1.25
Extended tooling with assorted length inserts

6604490

345.71

This KIT is a combination of the 2 kits above.

Assorted length inserts are included washer seat & taper seat
p/n 6604490.
This kit includes extended length tooling and a mini wrench which can help
with clearance issues. Using the mini wrench with the extended tooling
makes the tooling the same overall reach as the short version
p/n 6604412.
Washer style (2)
p/n 66144125 9.4mm, (2) p/n 66144127 11mm,
(2) p/n 66144113 13.5mm, (2) p/n 66144129 15mm, (2) p/n 66144111 16.8mm,
(2) p/n 66144112 23mm. Taper style inserts (2) p/n 66144183 10mm,
(2) p/n 66144185 15.7mm, (2) p/n 66144186 16.8mm, (2) p/n 66144187 24mm
(link to kit details)

(link to kit details)
 

Ford Spark Plug repair
2 and 4 valve

6605553


note:
includes 5 inserts
 

 433.83

PROFESSIONAL FORD SPARK PLUG
M14x1.25 THREAD REPAIR KIT

M14x1.25 Inserts are also available in aluminum click here:  normally used in racing applications,
where
Nitromethane is used as a fuel. Steel inserts typically have a higher tensile strength than aluminum.

KIT SIZE PART NO PRICE INCH METRIC
(mm)

WASHER  SEAT
PART NO

PRICE INCH METRIC
(mm)
TAPER SEAT
PART NO
PRICE
M18x1.5
6604815
Note: Inserts NOT included
281.96 .400
.720
10.0
18.3

66148151
66148153

4.80
4.80
.400
10.0

66148181

5.38
KIT SIZE PART NO PRICE INCH METRIC
(mm)

WASHER  SEAT
PART NO

PRICE INCH METRIC
(mm)
TAPER SEAT
PART NO
PRICE
7/8 - 18
6604718
Note: Inserts NOT included
450.43
  .430
  .780
1.000
11.0 mm
20.0 mm
25.4 mm

66147181
66147183
66147185

20.14
20.14
18.43
 
-----
-----

-----
-----

-----
-----

-----
-----
INSERT
DRIVER OIL

This oil is superior
for installing inserts.

 

SPECIAL SEAT CUTTERS
For use on some taper seat spark plug repairs that have very limited access to the spark plug hole.  Cutter diameter .650 inches
This tool only creates the inner countersink

SEAT CUTTER GUIDE
M14x1.25 SPARK PLUG
For use when the step tap cannot be threaded deep enough through the spark plug hole to allow use of the seat cutter.
REDUCED O.D
Seat Cutter
M14x1.25
used in honda fit where
the spark plug tube is
very narrow -
.750 O.D.
Use Kit
p/n 6604412ER
which includes the seat
cutter for honda fit.



 

SEALER
FOR HIGH TEMPERATURES
This sealer must be used when installing taper seat inserts.

KIT SIZE
PART NO.
PART NO.
PART NO.

PART NO.

PART NO.
M14x1.25
Standard
 66244196

spark plug seat cutter honda fit

3
3.30
 66244195












14.56
66244193ER



 


spark plug seat cutter honda fit
.750 O.D


59.32
 
6626020








 25.60
 6626010








5.20
 
M14x1.25
Extended
66244196E

 spark plug seat cutter honda fit

38.50
M18x1.5 66248196

spark plug seat cutter honda fit

56.46
 
SPECIAL TOOLS M14x1.25 SEAT RECONDITION KITS
THESE TOOLS ARE FOR HOLES THAT
DO NOT HAVE AN INSERT.
INDIVIDUAL
RECONDITION CUTTERS

Tooling used to recondition washer seat
or taper seat sealing surface.

Note:
These are not thread repair cutters they are only
used to recondition a worn out or damaged seat.

THIS IS FOR HOLES THAT
DO NOT
HAVE AN INSERT.





6604412SRW
washer seat
INDIVIDUAL
RECONDITION
TAPER SEAT
CUTTER


must have kit p/n 6604412



66244198
3
3.30


INDIVIDUAL
RECONDITION
EXTENDED
TAPER SEAT
CUTTER

must have kit 6604412E

 

66244198E

38.50

WASHER
SEAT KIT




6604412SRW
instructions
 

95.38

TAPER
SEAT KIT




6604412SRT
instructions



95.38

INDIVIDUAL
RECONDITION
WASHER SEAT CUTTER


must have kit 6604412



66244197
33.30

If you have any stripped spark plug thread repair questions regarding spark plug blow out our stripped thread repair kits can solve your thread repair
problem.    Read more on our Spark Plug Ford thread repair page.  
The 6604412E kit is commonly used in Honda spark plug thread repair, Toyota spark
plug thread repair, and BMW spark plug thread repair.

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