Well, at 184,000 miles I noticed a puddle behind my driver side rear wheel. My first thought is the rear axle seals. Used to have them replaced constantly on my 88 Crown Vic. Am I only the right track?
Senior Member
Well, at 184,000 miles I noticed a puddle behind my driver side rear wheel. My first thought is the rear axle seals. Used to have them replaced constantly on my 88 Crown Vic. Am I only the right track?
2003 Mercury Marauder 300B (Daily Driver)
1988 LTD Crown Victoria S
Senior Member
Yes. Replace bearings and seals, inspect axle it could be worn out. Have fun!
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Senior Member
IIRC, there's a kit with both axles, seals and bearings. I believe it was cheaper than the parts individually. I do not have the part # saved.
Sick-Speed play toy
It even came with friction modifier and gear lube IIRC. Search comes up with this and DANG the price has skyrocketed!!! I paid $295 locally back in like ‘11 if memory serves. Looks like I either have the wrong part number or Ford is REALLY trying to recoup their losses...Originally Posted by Grimrepairman
https://www.tascaparts.com/oem-parts...air-3w1z4a109a
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SOLD 12/31/2021
Cobra short block / ProCharger F1-A / Cog drive upgrade / Manley valves / Brian Tooley Racing valve springs / 80# inj. / -8 fuel line / -6 return / Aeromotive 340 pumps and regulator / 2012 GT500 TR6060 six speed / twin disc clutch / Driveshaft Shop GT500 upgraded CV joint shaft / BA5000 blow thru MAF/ 4.10's / Ford Racing 31 spline set up and Girdle / Metco D.S. safety loop / Stainless Works headers, cats, and everything else out back / ClassGlass hood / Bob's hood strut mod / Hurst line lock / Metco control arms / Addco front and rear sway bars / Monroe severe duty shocks all around / Race concepts rotors / Badgeless grille / 35% tint / FBM's interior LED kit and ambient lighting kit / Pioneer FB700 deck / kenwood speaker 4 Ch. / Rockford Fosgate 10" sub and amp / Kicker 6 X 8's all around / back up cam / bluetooth / Pioneer Xm / 704 RWHP 603 RWTQ tuned by Mo's Speedshop.
Senior Member
Every year they sit they have to tack on $50.00 inventory cost.........about $500.00 so far maybe??
I bought mine from a Ford dealer in Charleston that stocked about 50 kits for Cop cars......it was like $229.00 or so......back in the day!!
No Marauder
Senior Member
I believe it’s a good idea to swap to 31 spline axles when replacing the axles for bearing/axle wear because the 28 spline axles were known to be not hardened incorrectly. With the 31 spline upgrade you’ll most likely not have issues for a long long time if ever again. It is usually warn bearing surfaces on the axle that take out the seals.
CRauder
Sorry for the derailment but are there any known reports of failed 31 spline axles?
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Build# 1979/3214
Year 2004
300B
Ext. DTR
Int. Dark Char
FINALLY BOOSTED!!!
Sick-Speed play toy
As far as I know first hand Moser had a bad run over a decade ago. The heating process near the ABS ring caused brittleness and flanges literally snapped clean off the shaft on high HP cars. I witnessed Zack’s prozack black car self destruct at the track. It was a real joy to back it up off the track with like six of us and a floor jack.. A few other reports around the webs came in shortly after of similar situations.
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SOLD 12/31/2021
Cobra short block / ProCharger F1-A / Cog drive upgrade / Manley valves / Brian Tooley Racing valve springs / 80# inj. / -8 fuel line / -6 return / Aeromotive 340 pumps and regulator / 2012 GT500 TR6060 six speed / twin disc clutch / Driveshaft Shop GT500 upgraded CV joint shaft / BA5000 blow thru MAF/ 4.10's / Ford Racing 31 spline set up and Girdle / Metco D.S. safety loop / Stainless Works headers, cats, and everything else out back / ClassGlass hood / Bob's hood strut mod / Hurst line lock / Metco control arms / Addco front and rear sway bars / Monroe severe duty shocks all around / Race concepts rotors / Badgeless grille / 35% tint / FBM's interior LED kit and ambient lighting kit / Pioneer FB700 deck / kenwood speaker 4 Ch. / Rockford Fosgate 10" sub and amp / Kicker 6 X 8's all around / back up cam / bluetooth / Pioneer Xm / 704 RWHP 603 RWTQ tuned by Mo's Speedshop.
Junior Member
Not all 2003s have bad axles not sure of cut off dates. Maybe someone who knows can chime in.
2004 marauder black purchased new. Sold 9/16 at 297,000 miles. Still ran strong didn't burn a drop of oil.
2003 marauder black 28,000 miles all stock. Garage Queen.
2004 marauder red daily driver.
Member
Associated TSB .....burt ragio - Not all 2003s have bad axles not sure of cut off dates. Maybe someone who knows can chime in.
Public Enemy #1
Yeah back in 2003 that was believed to be true, my 04 had an axle start pitting at around 85k miles.
the 28 spline axles are just problematic
2016 Ford Mustang GT PP - Lund nGauge, BMR vertical links, MGW Shifter, BMR CB005
2004 Mercury Marauder - Eaton M112, Billetflow 3.4, Accufab SBTB + Plenum, T-56 Magnum, 4.10s, Stainless Works LTs, 2.5" Exhaust, Borla Stingers, Ridetech Coilovers + Adj rear shocks, FX-R projectors, Wilwood 13" BNSL6 + FNSL4 BBKs, S55 Gauge Cluster
440rwhp & 406rwtq Tuned by Adam @ Revolution Automotive
2063/3214
(Sold) 2003 Mercury Marauder - Stainless Works LT's, Stainless Works 2.5" Catback, JLT Intake, Mo's Xcal4 Tune
5377/7838
2000 BMW M5 - Evolve Intake, Evolve Alpha-N tune, Stoptech ST-40 BBK, UUC SSK, Dinan front STB, Dinan RSB
1996 Ford Bronco - 4" lift, 35" BFG A/T's, Punisher Valve Body, MH1 Projectors
Senior Member
I’m sure some can be found but it is well documented the issues with the improper hardening of the 28 spline that lead to their failures, of which proof is highlighted over and over on this website alone.
Senior Member
My 2004 SB car built in November 2003 had bad axles that showed up at 150K miles or so.......I believe ALL of 'em were inferior by design!!
No Marauder
I'm Your Huckleberry
And one of those replacement axles was bad when I pulled them to swap 31-spline axles.My 2004 SB car built in November 2003 had bad axles that showed up at 150K miles or so.......I believe ALL of 'em were inferior by design!!
You "feel" the difference because you want to "feel" the difference. Since you just spent money on the upgrade you "have" to feel the difference
I'm looking to eliminate the double pump process I have to follow right now to get the pedal hard
2004 300A Procharger #0010 D1X
2003 300A Procharger #0017 D1SC (SOLD. Last I heard, it was in Washington State)
Senior Member
Was it the right side one Dave??
No Marauder
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